Summit Chemical Company ASU00111 Pond Mosquito Dunk 20-Pack

I am a great fan of these dunk's. they work well and as long as you remember to drop one in every 3 weeks or so (rather than once a month as recommended) they will keep your pond free from the dreaded mozzie plague on a permenant basis. These Dunks seem thinner than the 8 pack but seem to work just as well and are considerably cheaper per dunk.

Since using these the mozzie population in my garden has diminished markedly. I wish my neighbours would use them!

have used these many times works well in pond to keep red worms and other bugs down

Excellent. These really do work against Mozzies