The advice is to apply it with a duster can that has a nozzle, rather then sprinkling it all over the dwelling willy-nilly. Try to avoid large-traffic regions and as a substitute search for the paths insects travel. And remember to reapply it generally, but sparingly. You can also use https://beau5yhow.blogkoo.com/the-ultimate-guide-to-how-to-combat-insects-in-jizan-50590981