well, we've had those traps up for about a week, but no hornets have been caught inside. actually, i didn't see that hornet for several days after yoshi put them up. then, on monday it came around looking for its nest...and then flew around to the front of the house, and i haven't seen it since. i hope that means it's gone for good. when i knocked down the wasp's nest, they started building a new one nearby. but i hope the hornet decided to go somewhere quieter....