So I think my birds have lice. I saw a little white-ish bug crawling on one of my hens faces. I did some reading and looks like most people treat the bird and coop with Sevin dust but reading the label it says it is harmful to humans and domestic animals. Is this stuff really ok to use? Has anyone used it and had any issues with it? Should I not eat the eggs for a while after using? Thank you in advance!