In the past, when there would be larger house plants that would be awkward to spray I would set them on a large garbage bag, cut a few inches off a flea collar and somehow attach it to the plant (rubber band, punch a small hole with a nail and use twist tie, etc.) Pull the garbage bag up over the plant and tie securely closed. Leave for 24 to 48 hours in a shady place. Seemed to take care of a variety of obnoxious insects. No idea what's in flea collars these days, as I use Frontline on the indoor / outdoor cat (whom I am trying to convert to indoor only, with decreasing success as we edge towards Spring.) Judy in New Jersey where the sun is shining and snow melting away, but ground still frozen as hard as stone