answer:The best option is surprisingly clean and easy. Now, my experience with these little bastards is extensive. It’s been tough battling in the shit. Many good men lost their lives, some battles won..others lost. There have been chemical weapons, gasoline explosions and until a breakthrough was found I almost fell into the depths of despair at the loss of our homeland to their relentless blitzkrieg. Ready for your eco-friendly nuclear option…........? Dish soap. Make yourself up a spray bottle with warm water and a big ole glob of palmolive or whatever you have. It kills on contact. C-O-N-T-A-C-T, seriously. Find the nest pour a bottle of that shit in and hit it with the garden hose. Hit the stragglers with the spray bottle and minimize collateral damage. Do not mourn their hollow lifeless corpses. Celebrate victory, walk outside without fear…but keep that spray bottle handy. Soap breaks the surface tension of water because it’s a surfactant. They suffocate instantly. It’s much quicker and more devastating than chemical wasp killer