Mosquito dunks biological mosquito control contains BTI， a natural mosquito larvicide， which kills mosquito larvae， but is harmless to birds， fish， wildlife and pets. Simply place a dunk in any standing water to control mosquito larvae for up to 30 days. Each dunk treats up to 100 square feet of surface water regardless of depth. Perfect for koi ponds， Hydroponic systems， animal watering troughs， rain barrels， birdbaths， stock tanks， planter saucers or any other standing water.

• Brand Name: Summit
• Sub Brand: Mosquito Dunks
• Organic: No
• Product Type: Insect Repellent
• Product Form: Solid
• Pest Type: Mosquitoes
• Container Size: 11.2 oz
• Ready to Use: Yes
• Active Ingredient: Bacillus Thuringiensis
• Number in Package: 20 pack