I have been using cedar oil spray against small hive beetles, ants and wax moths. the spray is primarily cedar oil, a natural ingredient with high pesticidal qualities. I have sprayed directly on bees who are not killed by it, but will get out of the way. shb die within seconds, wax moths and ants similarly. I spray the cedar oil spray on the entrance boards, bottom boards under a screen and on the underside of inner cover sand top covers. I also spray it on the ground below the hive stands to kill shb in the ground below the hive areas. Keeps populations from building up too much. This is the first year of my using cedar oil spray in bee hives and I plan to keep testing it and observing it's effect over a number of seasons.