Both of my horses are getting attacked by mosquitoes at night—one more so than the other. Last night, I went to check on him in the pasture and he was swishing his tail, stomping, and biting at himself. I had sprayed Equiderma earlier, but it didn’t seem to help, so I sprayed Pyranha (the yellow bottle). Even then, they were still biting him, so I applied a second coat and had to really saturate him. That seemed to help a lot—he immediately relaxed and continued grazing.
The only issue is that this morning he had hives on his chest and neck where I had mostly sprayed, so I’m thinking it must be a reaction to the Pyranha. The other issue is that I had to spray so much on for it to work and the bottle is expensive. Are there any other really good fly sprays for mosquitoes that anyone can recommend? I really prefer to go the more natural route, but I also don’t want my horses to suffer.