i like the idea of the nylon...going to have to give that a try..I use a baby-powder bottle & kind of do a gentle "poof"..hahaha..you get the picture. Spraying would be kind of hard right now with the temps...does that stuff freeze? OKay..that is a dumb question...sorry.I use sevin dust in a nylon and dust her down, you need to do entire area and change bedding, you can use a liquid mix and spray in the coops.