Dan from Swanton Ohio writes
The outdoor residual effects of Suspend SC, Bifen IT, and Talstar P are all 30 days outdoors. However, if you would like a longer outdoor residual then Suspend Polyzone would be ideal for your mosquito control needs. Suspend Polyzone has a 90 day residual outdoors utilizing the same active ingredient as the regular Suspend SC but the added polymer allows the insecticide to adhere to surfaces better and resist the elements of weather.
Answer last updated on: 06/25/2015