Boxelder Bugs, Ladybugs, & Stinkbugs
WHAT SHOULD I KNOW ABOUT OVER-WINTERING INSECTS? BOXELDERS, LADYBUGS, STINKBUGS
The best time is in the fall, roughly from September 15th to October 15th. That is when the bugs are coming in from the fields looking for warm places (inside your house) to spend the winter. With that said, we can spray just about any time, but with lesser results. We do a bunch of houses in the spring, but 99% of those houses were not done the previous fall.