We have the green ones and the brownish-gray ones. The gray ones stink and leave the stink on you. We have them really bad in the MD/VA/DC areas. As it warms up, they come out in droves. Bugzooka works for the ones on the ceiling :-) I have had to replace burners on my grill, they got in, clogged it up and burned causing the burners to clog up. Friend had a water heater go up in flames, they had clogged up the flue. My pellet stove in the house wouldn't stay lit, stink bugs clogged up the vaccum port and flue. These critters are not only dangerous, but a huge nuisance. Good luck, nothing seems to work.