I wouldn't recommend this product for cats or dogs. Try a more natural and non-toxic product like diatomaceous earth.
I have tried many other brands and always come back to this brand it is simply the best.
Use regularly to prevent mites and bugs affecting poultry. Keeping coop clean is first priority. We have free range birds and they can pick up bugs, ticks, mites so this product is a valuable backup to garlic mash etc. We dust coop bedding straw when birds go out in morning and have had no adverse effects in 8 years and no long term mites. We haven't used it when there are baby chicks so suggest withholding at that time.
I use this product because it is very effective at getting rid of the lice when I notice my girls are starting to dust bath a lot more than usual. Even when I use a mask it still affects my breathing and I feel short of breath after using it. I also believe it is a fairly expensive product for the amount you get, so I try and use it sparingly to make it last longer. I would recommend this to others but only if they can't find a cheaper alternative.
Easy to use with hens. Just apply powder as directed and watch the lice disappear. BUT remember to dust their coop/nest and do it again in seven days.