Protect your home and garden from pesky mosquitoes with our long-lasting Mosquito Dunk®! Formulated with BTI, a natural organic ingredient, it effectively kills mosquito larvae for 30 days or more without the use of harmful chemicals. Simply place a floating Mosquito Dunk® in any standing water around your property, such as Koi ponds, hydroponic systems, rain barrels, or stock tanks. Safe for use around children, pets, and wildlife, each Dunk® treats up to 100 square feet of water surface, regardless of depth. Say goodbye to mosquito worries and enjoy your outdoor spaces in peace with Mosquito Dunk®!