Anyone ever use Fly Predators?

I have used them. They are either irradiated so they are sterile, or they are all one sex. You have to keep buying them monthly. The only way they make money is to have an end point of the life cycle, or the company doesn't get return business!

They look like tiny wasps. They don't sting people or horses, but do kill fly eggs / maggots. They work very well and I have not noticed a problem with a build up or migration of the little buggers. You sprinkle them on the manure pile and in areas that collect manure, and the predators stay within 300 feet of where they hatch, then they die after 3-5 weeks.

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I used them for one season. Because we picked up our manure and put it into bins, we didn't get the best effect from them. Also, if you use any fly traps for the flies that do emerge, the traps kill the predators too. And we still had enough flies to want the traps out. But anyway, the other downside is that if you have neighbors who don't use them, it ultimately defeats the purpose. These predators would hatch on the manure and the piles would be covered in them. When we put the manure in the bins (to be taken for composting), we would be covered in them, and every time we opened the lid of a bin to add manure, dozens flew into our faces. They are tiny like gnats and can drive you nuts. I think that if you are running a facility with a manure pile that accumulates over time, they may work to keep it from producing as many flies. The predators supposedly will travel to other piles in the pastures and reduce the fly populations there as well, but in our situation, we didn't see a measurable advantage to using them.

Yes, I have used fly predators and they work great! The fly predators eat the fly eggs in the horse poop and it reduces the number of our flies considerably. There has not been a noticeable population of these little bugs at our farm. They work great, good luck!

yuuup. they work pretty well. they eliminate lots of flies im not sure about how they affect the ecosystem but its natural so im guessing its fine. the fly predators dont live long anyway and they dont completely eliminate flies, so there are still flies left for other organisms who eat flies. get a few bags..put them in turnout paddocks, around arenas,etc

I have been using them for years, they work great! The ones I buy are sterile so I have to spread the eggs in my manure pile several times throughout fly season.

I use fly predators and they work great! I have definitely seen a decrease in fly's and the fly predators ' bother people or horses. They only stay on the manure pile and eat the fly eggs.

I use them. They work wonderfully. No hassles at all.