Hi Martha, I use flat black plastic traps with sticky inserts, originally from Historyonics but now under the wing of Sentomol.com. They open up like a book so the white stickers & any bugs are hidden inside. They are very discreet and I put a sticky label on the bottom with the location on, as they get moved when we have filming. In dark corners they are barely noticeable, and they look quite smart anyway. I haven’t ordered any for a while but there is a phone number on the website you can try to check if they still do them?