Talstar P will offer an outdoor residual for 30 days after the application. For more information on treating mosquitoes, please click on the link below.
The most popular product for sod webworms is Talstar. Talstar is very effective on most insects including chinch bugs and it is gentle to plants. Time applications to control young larvae, if possible. Spot treatments may be applied when infestations are first detected and the damaged area is small. The treatment will be most effective if applied in the early evening when larvae begin feeding. Please check with your local cooperative extension office to see if a second generation is possible in one season in your region.
There is no real reason to mix both Talstar and Cyper. They kill pretty much the same insects. One or the other would most likely do the job.