Virtually any detergent will kill stinkbugs. Your options are to put them in a container with a a weak dish- or hand-soap solution (a mug or yoghurt tub with a

Virtually any detergent will kill stinkbugs. Your options are to put them in a container with a a weak dish- or hand-soap solution (a mug or yoghurt tub with a few drops of detergent + water will do the trick). They'll die in a minute or so. You'll get some smell though it's usually not too strong if you avoid crushing them. Dispose of the dead ones within a day. You can also use a (diluted) detergent spray, and apply that directly to groups of the insects, particularly where they're gathered on exterior walls, plants, etc. That's effective diluted to 25%, and almost certainly further. Any detergent seems to be effective, specific brands don't much matter. If you need a specific recommendation, a cheap Dawn detergent should work. For a passive solution: soapy water + vinegar traps can be used. Tubs, buckets, reused plastic food containers, aluminium foil pans or trays, roasting pans, etc., all make excellent traps. See: <https://yewtu.be/watch?v=DNjzdH45XT4 https://yewtu.be/watch?v=DNjzdH45XT4> And a larger DIY insecticide-based trap: <https://yewtu.be/watch?v=AZxkmmImRIc&listen=false https://yewtu.be/watch?v=AZxkmmImRIc&listen=false> Diatomaceous earth should also be effective.