This product, Wondercide, is the best I have found to kill unwanted pests and keep snakes at bay. It is 100% natural and is safe to use around children and animals, even when wet. It also will not harm the beneficial,
sight-driven insects like honey bees and butterflies. The cedar oil interrupts the receptors of
scent-driven insects (mosquitoes, flies, Japanese beetles) and either suffocates them or runs them off.
I know that the smell of cedar is supposedly bad for chickens so I do not spray it
IN the coop, only on the outside, even though I don’t think it would harm them. (My chickens seem to prefer resting in my dogs’ houses, which have cedar shavings in them, and have suffered no ill side effects.)
When researching this product several years ago, I did read where its use would deter snakes as well. And I can testify that when used regularly, I see no snakes around the treated areas.
As far as other products (moth balls, sulfur), I do not want to subject myself to the horrible smell, not to mention one of my birds accidentally ingesting a piece of a moth ball. We all know how curious a brood of chicks can be. Everything has to be sampled. (Like me at a seafood buffet!)
As for the netting, all of my birds (chickens and ducks) free range all day and would be subject to getting caught themselves and suffering undue stress and trauma until I found them and released them.
This stuff is a little pricey, but like Elector PSP, does a marvelous job! Check it out for yourselves.
https://www.wondercide.com/products...ncentrate-kills-repels-100s-of-pests-ecotreat