This is excellent. I cannot wait until I get to this point - buy the sprayers. I read an article about a farmer in ... Russia? .... that was near a nuclear fall-out zone. Not sure why, but scientists were drawn to his garden, probably because he always had good production. He had been foliar feeding his plants with worm tea. They lab tested his plants compared to others in the area. No negative stuff. I don't recall, but think it might have been radiation they were testing for? His had none.