We live in a rural area. Our porch is sheltered from the wind and flies were collecting by the hundreds (not exaggeration). After a few hours they were down to a dozen or so live and one area was covered with dead flies. The lizards coming up and eating the dead flies haven't shown any ill effects.

Great first use. I mixed the powdered fly bait with water as direct and using a paint brush I applied to one side of our dumpster. Flies are always an issue at our restaurant, they always seem to find a way in. I checked the side of the dumpster where I applied roughly 20 minutes later and was very surprised. Flies were feeding and dying on the spot. This was an easy solution to keep them out of our restaurant.

We keep a tortoise in our yard that attracts tons of flys. We sprayed this on the outside of the enclosure and the flies are noticibly less pronounced. We also sprayed some inside to cut down on flys that get inside. The hormone included in this insecticide definitely attracts the flies. You can watch them swarming around the sprayed area. After landing they sit and suck up the insecticide for a few seconds. It's awesome to watch. After sitting on it for 20-30 seconds, you can see them start twitching and then their wings start beating uncontrollably, then they die. I'm not sure “quick knock down” is an accurate description though because the whole process probably takes 1-2 min. Despite the speed of action, the gratification of hearing fly wings beating uncontrollably as they seize into death makes this product 100% worth it. Oh yeah.... and no more flies...that too.