Well once again, the mites don't try to climb to the strips. They do the opposite. The strips fill the air with a toxin and the mites die no matter where they are. For me the adults were dead overnight, then the babies as they hatched within another day or two. It's kinda like bombing, only a lot easier. You don't have to hang the strips, you can stand them up like I did. Don't confuse these yellow strips with the ones that have adhesive on them, which are worthless for eradication.