Mosquitoes will lay eggs in any standing, stagnant water. Even a bird bath. Try to keep the water changed out and the bowl clean and use this Biological Mosquito Control for bird baths to keep them to a low roar.
John’s Tip: I love that this product doesn’t hurt any of the critters that may come in contact with it. But I really love that it helps keep things like West Nile Virus, Equine Encephalitis and Heartworm Disease in check. – Happy Hunting!