Mosquito Dunk Bucket

This woman was explaining how to create a mosquito dunk bucket to keep the pests from breeding. If you live in Roeland Park, she would give the mosquito dunk to us but because we didn't we have to go buy it at the hardware store. (She was at the Indian mission in Fairway.) Nonetheless, it sounds like a way to keep the mosquito population down without spraying. I shall give it a try.