Chigger - acarian gardens
After a good nap in the grass at the end of the summer, red fellows that demangent appear in some places of your body... you are probably the victim of punctures of the larvae of chiggers, small external parasites that use you as a pantry! Find out in this file a set of answers and products that will allow you to fight this insect at best, increasingly present each year over the summer period.
Mto know the chigger
Scientific name: Trombicula autumnalis
Order : mites
Size adult 2 mm
Location : garden, rather wet and shaded
Period : summer period
What you need to know about chigger
The chiggers are part of the arachnides and therefore mites (and not insects). They are also called according to the regions: trombidium, redt, puron, vendangeron, red spiders ... this acarien is cosmopolitan. We find them all over Europe, asia, america.
The chigger should not be confused with another mob, the silky trombidion, which is harmless to him.
The adult chigger has 4 pairs of legs (then 8 legs) while the larva has only 3 pairs (6 legs).
They clap in the herbs and plants of our gardens during the summer and early autumn hoping that a mammal or a bird passes in front of him in order to settle for a good meal. Like most mites, it does not feed on blood, but tissue fluids and cells of the malpighian layer previously liquefied and predigreed by the enzymes it injected with its saliva.
Adults measure between 0.6 and 1 mm (up to 2 mm) and are yellowish white. In the spring, females can lay nearly 400 eggs in the soil. Chigger eggs are able to return, when the weather conditions become severe (too cold) in a phase called a diapause (leave phase). It reactivates as soon as temperatures rise. After a month, young larvae go out looking for a host. they measure between 0.2 and 0.5 mm and are orange-coloured.
They sting the vertebrates to feed on lymph and tissue under their skin. For this, when the larvae manage to climb on their prey, they seek the ideal place to sting: a zone of fine, wet and covered skin, such as the groin folds, knees, armpits, under the breasts or testicles. Once positioned, the larvae of chigger use their chelica (oral parts) and penetrate the skin. Once the hole is created, the larva will secrete saliva containing enzymes that will truly dissolve the tissues in contact. They will then be ingested with blood and lymph. This results in the appearance of a red swelling that itching. a larva after slaughter (after a "meal") can measure up to 1 mm (visible therefore to the naked eye).
It is their saliva that causes itching (allergic reaction) as well as the immune response due to the hole left by the larva. at this point, the chiggers are red and are also called red. The larvae feed for 2 to 3 days, then, once filled, fall to the ground and fall into the earth where they will turn into a pre-nym (immobile) into a nymph (mobile) and then into an adult. the complete cycle of an chigger is variable between 2 and 12 months and depends a lot on the weather conditions.
Their main hosts are rabbits, hedgehogs, taupes, rodents, cats and dogs, birds, reptiles (and yes, even cold-blooded animals)! etc. humans are also affected by the bites of chigger. nymphs and august adults are blind. unlike the larva, they feed on plant debris, small insects, small mites, mushrooms.
Chigger and temperature
The sensory perception of the heat is not developed in the chigger which appears according to laboratory tests, unable to locate a hot tube or the body of a young living mouse. when contacting a heated object, it produces a response for a temperature difference of about 15°C. in a linear or concentric temperature gradient, it has low and high temperature avoidance areas that seem to indicate a temperature preference between 15°C and 26°C.
Places of predilection of chigger
The chigger particularly affectionate fields, high herbs, wood edge, shady and humid grasses, near water. They are met from March to October but more particularly when temperatures are hot, from July to September. Drought periods are very well suited to the chigger. the chigger adults winter.
Chigger in the dog and cat
If your cat or dog grazes, licks abnormally or bites intensely at the end of summer and autumn, look for the presence on its skin of small orange clusters (fluo). It's very likely that it's chigger larvae.
The augusts affectionate the fine skin of our animals, between the fingers of the legs, on the anal and vulvary fold, inside the thighs, on the testicles and also on the ears.
Intense itching can lead your friend to significantly lessen his skin and secondary injuries (erosions, crusts) can then appear.
Summer examine your animals and see if tiny bright orange spots, signs of the presence of the chiggers are present.
If they are, just spray on areas with anti-puces and anti-tick spray that you can buy in pharmacy or your veterinarian.
To avoid ulterior contamination, you can treat your animal preventively with this spray during the risk period. Spray the product between the fingers, behind the ears, between the thighs and under the armpits. spray sprays must always be done before a walk or a good meal so that your pet does not lick the medication, it cannot be ingested.
To sum up, how to protect your pets from the chigger ?
1 - treat the baskets or niches of your pets with our insecticide all insects 4j diluted to 5% (500ml vapo for 5 m2).
3 - check their coat regularly and carefully, especially after a walk outside to check that no chigger is attached to it. Avoid sleeping with your animals.
What does an chigger bite look like ?
The medical term of the pathology given by this parasite is trombidiosis. It is an allergic reaction caused by the saliva of the larva. Unfortunately, we don't all react in the same way to an chigger bite. Some people will hardly react, when others will be taken from violent itching.
Chigger larvae bites are usually not isolated: they are frequently lined in a series of small buttons (papules) from 2 to 3 mm, surrounded by a clearer halo of 1 mm, on the same part of the body. It is also very common that several parts of the body are reached at the same time.
Like all insect bites, the punctures of the chigger larvae may in some cases become complicated by the appearance of a local allergic reaction: instead of small buttons, large, swollen lesions appear on the skin and the redness diffuses. Itchings no longer leave any respite, an edema can even occur. an allergy is never anodine and requires at least a visit to the pharmacist. However, if allergy is extended or seems severe, it is strongly advised to consult a doctor, especially if the person is a young child.
We have already mentioned it, the larvae of chigger often sting where the skin is the finest (paints of the skin: behind the knees, wrists, inside the arms, in the groin). They also attack the most exposed and easy access areas: feet, ankles and legs. all the places of the skin a little compressed by an elastic or by a tight garment, are sources of moist heat that will fit perfectly with the larvae of chigger. children, who sometimes tend to sweat from the head, are often stuck in the scalp. Contrary to what one might believe, the moment when the larva clings to the skin of her host is painless. On the other hand, during the few days when the chigger larvae stay on the skin of their human or animal host, they secret a very irritating salivary fluid.
Itching is very vivid after 20 to 30 hours and can persist for 7 days.
How can we relieve the bites of chigger ?
There are effective anti-inflammatory or antihistamine creams. Alcoholic lotions (cooled alcohol) or acidulate as well as vegetable or mineral oil-based solutions have soothing action. do not hesitate to ask your pharmacist.
Otherwise, grandmother's remedies have a hard life. e.g., from the onset of the first symptoms, it is advisable to take a hot bath while soaping at marseille soap. you can also soothe itching by applying a cataplasm green clay or cabbage leaf on the areas concerned. Idem, a cotton with a little bit of vinegar will significantly limit the itching associated with the bites of chigger.
THE essential oil of lavender aspic will be a weight ally to relieve the itching of chigger. as well as a homeopathic treatment consisting of rumex granules crispus (5 ch) or apis mellifica (5 ch). ask your pharmacist or your usual homeopath for advice.
Finally, our Rolls-On with essential oils are formulated to relieve insect bites. So think you'll always have one on you during your summer outings.
Our recommendations : Attention to limit the scratching sessions! For, the more you scratch, the stronger the itching will become. So, not to contaminate the rest of the body, don't forget to clean your nails. You can also apply a freezer bag filled with ice on affected areas. the cold will have the double effect of calming the itchings, but also being fatal to the larvae if they are still present. the cold that can burn the skin, surround the bag with a cloth or towel.
And for your pet ? If your cat or dog grazes because of the chiggers, our calming stop scratching lotion based on natural plant extracts will soothe itching for the hygiene of the dog’s skin and cat.
There are several methods to protect themselves from the chigger. The most effective solution is to wear long, waterproof, well closed clothing, especially at the leg level to reduce access to the skin. very nice to dress like in winter when it's hot! if you walk in risky places (high grass, fields, wood edge) think at least to wear covering and tight clothing. it will already limit their intrusion.
Avoid rolling in the grass or making a prolonged nap. the chigger will take advantage of these opportunities to climb on you. and if the nap call is essential, make sure to extend on a blanket, rather than on the floor.
You can also effectively protect yourself from chiggers thanks to 3 of our products.
2 - the other is to apply to your textiles: our repulsive insects textile stings. composed of géraniol, this spray will deter insects from hanging on your clothes for long hours.
Finally, a little talc spread over your skin will also make a good dam in the chigger. Attention, however, to the drying of the skin that it causes.
Everything you need to enjoy a sunny ride or a family picnic without the constraint of the chigger.
How do we disinfect chigger bites ?
If, despite the preventive measures cited, you have still been stabbed by chiggers, you will have to follow a small disinfection protocol:
1 - Put clothes worn in a washing machine at 60°C, as larvae can still be found there. for textiles that do not pass in 60°C machine, you also have the freezer solution for 48 hours. and otherwise, opt for itaerosol anti-acariens with neem oil Aries. place your textiles in a large garbage bag. spray the aerosol inside the bag and close well to make it as hermetic as possible. reopen after 48 hours.
2 - Take a shower or a hot bath
3 - Rub into marseille soap to kill parasites on your body
4 - Disinfect the bites using a hexamine-based or chlorhexidine-based antiseptic using a sterile compress. Renew the operation twice/day to avoid the risk of overinfection associated with scratching, especially in children.
How can we limit the presence of the chigger ?
To avoid, or at least minimize, the development of chiggers in your garden, you can take a number of measures:
1 - Cut your lawn regularly
2 - Sprinkle the garden abundantly – chigger do not like excess water
3 - Plant repulsive plant species, such as lemongrass, or mint.
How to eliminate the chigger ?
During the chigger presence period, sprays with sprays acaricide products may be applied to the external sectors concerned. A few precautions should be taken:
1 - Start the treatment from the first symptoms or a little before the dates of appearances are known;
2 - Use only acaricides with low toxicity, low remanence and that respect, as far as possible, other animals.
3 - Treat only portions of lawn located in shaded and wet areas and do not extend to the areas processed within 10 days of treatment;
4 - Treat only in rainy weather, after tone very razed lawn parts
There is also a natural acaricide that has proven itself against the struggle of the chiggers: suffering. it meets in two forms:
- a fine powder: sulphur blossom
- granules to dilut in water: the sulphur
Our insecticide 4j Dilute to 5% will eliminate the chiggers of your grassed surfaces. it applies by spraying. This product containing pyrethra (his degrading quickly under the effect of uv and heat), it is important to apply it to the hottest hours of the day (preferentially at the end of the day). our concentrated 4j insecticide, once diluted in water at 5% will allow you to treat up to 200 m2.
Finally diatomaceous earth, this silicon dioxide powder will be dreadful against the chigger. It is a natural insecticide that kills insects and slugs by dehydration by damaging their skeletons by absorption of protective waxes. You will need to spread on the affected surfaces and especially not tone behind (which you will understand, remove the powder by spreading it into the air!). this earth acts by mechanical action. Once the chigger put in contact with this diatomy land, it will end in a few days to die of injuries inflicted. Keep in mind that diatoma loses its drying and dehydrating properties when it is wet. So dew and rain will disable its effects. Once again dry, it will resume its effects. conclusion: take a look at the weather !
But be careful, it is always good to remember: any chemical treatment remains prejudicial to other small animals, garden auxiliaries, and especially to other mites who are efficient predators in gardens. best is to leave more room for natural predators (insects, mites, etc.). by letting a little live the garden so that they find shelters (such as dead woods, wild herbs, friezes, insect nests, etc.). they will also accommodate other vertebrate hosts for the chigger.
The products you need against the chigger
Etape 1 - I protect my pet from the chigger just before an exit
If you plan to take a walk with your dog, don't forget to protect it from the chigger. the products below will protect it from chiggers, ticks, chips or mosquitoes. sprays are to be applied directly to the animal's hair. of the product Alt'o zinsect gel, it will be ideal to protect all the most sensitive parts such as pads, anus or sex contours, as well as all places where the skin is fine and likely to interest these spicy insects.
Etape 2 - I protect myself from the chigger
You want to garden, walk, hike or simply spend some good time outdoors, so don't forget to protect yourself from chiggers to the beautiful season. we offer several effective and natural repulsives that will prevent them from stinging you. The anti-insect bodily lotion applies to your skin and the repulsive insects spurs on your textiles. As for the Roll-We were with lemongrass, it will be very convenient to use and easy to carry in all your trips. it will hold distance ticks, mosquitoes and chiggers.
Etape 3 - I'm eliminating chiggers from my environment
To get rid of the chiggers of your environment, here are the natural products we offer. First, the contact insecticide 4j. dilue this concentrated product to 5% with water in a garden sprayer (950ml of water + 50 ml of pure insecticide) and then pour it on the grassed surfaces at the hottest hours of the day (preferentially at the end of the day). Take care before toning the turf very short to increase your chances of contact between the product and the chigger. aerosol anti-acariens Aries will allow you to treat your textiles or any objects (heavy, belts, etc.) after an exit exposed to the chigger. diatomy soil remains a very effective product to spread on your grassy surfaces.
Frequently asked questions about the chiggers and red spiders
Q: Is it possible to treat a specific area with your product. What concentration do you recommend me to do it? Will it be done by watering or spraying the supposed area ?
R: Yes, but to be really effective, it would be better for this area to be perfectly twisted before (at least for grass)? I think 2 to 3 per cent will be enough. watering would be more efficient, but a garden sprayer should do the job.
Q: I'm looking for a trap for small red spiders, also called chiggers, based on pheromones. Does that exist ?
R: Although the red spider and the chigger are part of the mites and live both in the grass, there is no connection between the two. the red spider (family tretranychidae) is a parasite of plants, while the larva of the chigger (drumidion mites) is a tissue and blood sugar. apart from that, I don't know a trap, either for one or the other !
Q: Which organic insecticide use to treat mites (red spiders) on a lemon tree? (ex: insecticide 4j to 1)%
R: Our products, for regulatory reasons, can only be used on apartment plants (inside and outside) but in this case you can actually use our insecticide 4j diluted to 1.5% (ready to use).
Q: Would you have something efficacious to fight against the chiggers or at least avoid getting stinged.
R: Products based on pmd (anti-moustic) would be effective on sugar insects. our bodily lotion Penntybio contains this substance.
Q: We do a tpe on the mites and we would like to know which essential oils are effective against the chigger ?
R: On mites, you have essential oils such as lavender, lemongrass, mint or geranium, which have an action but mainly repulsive.
Q: What are you advising to combat the proliferation of chigger? for the garden of course, but eventually to protect pets, here dogs? Could the earth of diatomy be effective ?
R: Every year, the heat is the same. the chiggers are out and it is very difficult to escape. for outdoors, you can treat with our insecticide 4j "small insects" concentrated at 1.5%. They are mainly found in shaded and humid areas, near water but you will only kill larvae that are not buried in the soil. at the protection level, I am not sure that the products intended for chips and ticks are effective, the soil of diatomy is effective on all insects but its use in a garden is complicated. As soon as she humidifies her properties are no longer active.
Q: Which product advises me to treat an indoor plant infected by red spiders. Knowing that the ideal being to spray on the plant, isn't that harmful to it?
R: Insecticide 4 to 1.5% (small insects and mites) is not harmful. However, the product contains soap, so if you can, a few days after treatment, shower your plant.
Q: i have an invasion of red spiders, or at least tiny (less than 1 mm) small beasts that look like red spiders. They seem to me black with red antennas and leave a dark green train when they are crushed. the walls of my house are invaded (under the windows' edges, in the window frames, in the windows' foliage, and on the whole wall height in the crepi interstices. I would like to know if the earth of diatomy would be effective to end it??? I spent my day spraying a white vinegar mixture + black soap + bicarbonate that seemed to radiate them at once. in vain: new invasion after 10 minutes. You write that the earth of diatoma is inefficient on the mites, and if it is red spiders, then they are mites. Do you think your product can end this invasion? if yes how can I do it to put it on all my crepi??? by where do I start? there are from everywhere!!! I can't even open my windows because I find them in the house! What frequency is it? Thank you in advance for your answer that I look forward to.
R: Red spiders, chiggers. given the size and period, they are probably small insects of the mites' family. our insecticide 4j diluted to 1.5% is enough to end it. It's a contact insecticide. That is, it will only be effective from the moment you touch them with. This product exists either in its diluted form, ready for use, or in its concentrated form, and it is you that mix with water up to 1.5%. Like all insects, the ideal is to identify and treat households. But in practice, it remains complicated. In your case, I advise you to spray the product on the facade of your wall, insisting on the interstices of the crepi. You can also apply it on the edges and frames of your windows. The more you touch surfaces, the more you will increase your chances of destroying a maximum. make the treatment at the least hot hours of the day (matin or evening) because the pyrethra contained in the formula remains sensitive to the action of the uv and heat. When in the diatomy land, if it is only not effective in external use (due to the fact that it becomes inactive as soon as it is humidified), it can be a good way to fight this type of insect in the indoor environment. diatoma can also be projected on vertical walls. so that it is properly fixed, you will need to mix it with water in a sprayer (between 300 and 500g per litre of warm water). Once projected on the walls, the water will evaporate and the diatomy particles will remain fixed. but once again, be careful, a big averse may lose all the work!!