Okay so I've got all three up and sprouted and the one that came first is growing faast. But I noticed yesterday there are almost microscopic white little spiders on the pots. I assume these are spidermites and I plan on getting some pest strips. I was wondering how well these work, are they dangerous to put near the plants, and will the spidermites harm my plants if they are or have been on the pots for a while?