Just a bit of a warning to people who might consider using wasp spray on anything but bees and who live where the police/rangers are, shall we say a "a bit overzealous". All wasp sprays have this on their labels: "It is a violation of Federal law to use this product in a manner inconsistent with its labeling." I mention this because it's possible (with the aforementioned overzealous officers) to wind up with legal problems for attempting to poison wildlife. The active ingredient in most wasp sprays is pyrethrin which is a poison whereas pepper spray contains capsaicin which is just concentrated hot pepper. Sure - I know the odds of getting in trouble are slim to none, but the potential is there.