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Review title: mosquitos
Product review: i use these every year in my rain barrels. i like them and they do last a while. I use more then whats recommended for my water size because I've found its directions are to break it apart which means they crumble and that just makes a mess. i just toss a whole dunk in. if your water is already heavily infested with mosquitos, this won't kill them. this prevents them from being able to reproduce. if you water is heavily infested, dump it and start over.
