Hey everyone, I'm getting ready to open the pool next week and fixed up my rock bubbler this week. We had issues with horseflies last year and after doing some reading they like to lay eggs in wet rocky areas. I have a rock bubbler that recycles water from a hidden basin under some river rock near the pool (sounds like I unintentionally built a perfect breeding ground for them). Has anyone found any products to either treat the water or spray the area down to kill these things before they start showing up later this season? As an added complication, the birds love to come by and bathe and drink the water coming out of the bubbler so if there is an option for something that doesn't harm them it would be ideal however my 5 year old not being terrified of going in the backyard after one of them bit her is the priority.