The active ingredient fipronil works without detection and clings to the insects as they contact it

fleas and other invasive insects and provides residual control for days after the first application

Depending on the weather and the application type

It treats invasive mite species that attack flowers

Sonar PR Aquatic Vegetation Herbicide Control Mosquitoes The active ingredient fipronil worksSonar PR Precision Release brings improved efficacy, broader treatment sites and increased monitoring capability to the ever expanding Sonar product line. Sonar PR Precision Release delivers a higher initial active ingredient concentration than Sonar SRP while maintaining a higher concentration for a longer period of time after the initial application than both Sonar A. S. and SRP. Sonar Aquatic Herbicide selectivity is dependent upon dosage, time of