Other predators include dragonfly (fly) naiads, which consume mosquito larvae in the breeding waters, adult dragonflies, which eat adult mosquitoes and some species of lizard and gecko.[4] Biocontrol agents that have had lesser degrees of success include the predator mosquito Toxorhynchites and predator crustaceans—Mesocyclops copepods,[5] nematodes and fungi.[6] Predators such as birds, bats, lizards and frogs, have been used, but their effectiveness is only anecdotal.