Diatomaceous Earth vs Permethrin Dust for Mites
One is an effective licensed insecticide and one has a much weaker record. What each does, the dust hazard, and how to treat a coop properly.
The short version
If you have an active mite or lice infestation, a licensed permethrin poultry dust is the product with the evidence and the label instructions behind it. Diatomaceous earth is popular, and it may contribute something in a dry dust bath as prevention, but studies of it as a poultry mite treatment have produced weak and inconsistent results and it stops working entirely once damp. It is also a genuine respiratory hazard: the fine dust is harmful to inhale for both you and the birds, so wear a proper mask and do not apply it in an enclosed coop.
At a glance
| Harris Food Grade Diatomaceous Earth, 5 lb | Prozap Garden and Poultry Dust | |
|---|---|---|
| Kills an active infestation | Poor evidence | Yes, per label |
| Works when damp | No | Yes |
| Respiratory hazard | Significant, use a mask | Follow label precautions |
| Egg withdrawal period | None | Check the label for your product |
| Treats the coop as well as the bird | Limited | Yes, per label |
| Use as dust bath additive | Common, small amounts | No |
Choose the Harris Food Grade Diatomaceous Earth, 5 lb if…
Diatomaceous earth has a place as a small addition to a dry dust bath, where birds work it into their feathers themselves, and as a dry environmental measure. Buy food grade, keep it dry, and wear a fitted dust mask when handling it, because the fine particles are hazardous to inhale. Do not rely on it to clear an infestation, and do not dust it heavily through an occupied coop, which puts a respirable dust into the air the birds breathe.
Check Harris Food Grade Diatomaceous Earth, 5 lb on Amazon
Choose the Prozap Garden and Poultry Dust if…
Use a licensed poultry dust when you have found actual mites or lice. Read and follow the label exactly, including the application rate, the treatment interval and any egg withdrawal period, since those are regulatory requirements rather than suggestions. Treat the birds and the coop together, paying attention to roost ends, cracks and the underside of perches where red mite hides by day, and repeat at the interval on the label to catch newly hatched mites.
Check Prozap Garden and Poultry Dust on Amazon
Related
Comparison based on published manufacturer specifications and the general consensus of owner reports. We have not tested these products side by side. Confirm current specifications and prices before buying. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Reviewed in detail
For a full look at one specific option, see Food grade diatomaceous earth review.
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Frequently Asked Questions
How do I know my flock has mites?
Check at night with a torch, since red mite hides in the coop during the day and feeds after dark. Look under the roost ends and in cracks for grey or red specks and ash like debris. On the birds, part the feathers around the vent and under the wings and look for moving specks, clusters of eggs at the feather base, and scabby or bare skin. Pale combs, birds reluctant to go into the coop at night, and a drop in laying are all common signs.
Is there anything else that works?
Your vet can advise on prescription options, and some are used off label in poultry with a withdrawal period. Physical measures matter too: a thorough coop clean out, smooth painted or sealed roosts with fewer cracks, and removing old bedding. Whatever you use, the coop needs treating as well as the birds, because with red mite the birds are only where the parasite feeds, not where it lives.
Are the eggs safe to eat during treatment?
Only if the product label says so. Licensed products carry an egg withdrawal period where one applies, and that period exists because residues appear in eggs. Read the label for the specific product you buy, follow it exactly, and if the label is unclear or the product is not licensed for laying birds, ask a vet before using it on hens whose eggs you eat.
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