How soon after we have used exotherm can I use a spray for whiteflies? We have vented today and while I have the area free I want to go in and wipe those buggers out.

Hi Luanne - you should be able to go in with your sprays for whiteflies the following day......

There aren't any warnings on the Exotherm label but make sure there aren't any warnings on your insecticide label that caution against sprays in close proximity to chlorothalonil which is the active ingredient in Exotherm.