Talstar is actually one of our best products for earwig control. The issue though is that earwigs live mainly inside walls where you cannot get to. Once the earwigs come out they will walk over the Talstar and die, but it is not an immediate kill. Talstar leaves a residual, but when an insect walks over it, it can take a few hours or a few days for it to die depending on when you last applied it. It may be that you had such a large infestation that it is taking a while to eliminate them all. Talstar by far is our most popular insecticide.