I know I've read this and that here and there about how it's unsafe blah blah. If it's unsafe I should have been dead loooong time ago. Last time I had them I had 2 dozen plants in 2 tents all flowering. I rinsed them a couple times a week alternating between Dawn/water, plain water, and mighty bomb, kept them knocked down til harvest. I don't even sweat the bastards anymore, they're a nuisance but they're not the boogeyman I first thought they were when I started growing.