FourStar™ Briquets contain the proven active ingredients Bacillus sphaericus (Bsph) and Bacillus thuringiensis israelensis (Bti), combined with patent pending sustained release technology. It provides long term residual control, reduced treatment frequency and saves on application labour cost.
Dual Action Release Technology
The environmental advantages of active ingredients Bacillus sphaericus and Bacillus thuringiensis israelensis are well known, making microbial larvicides the material of choice. To enhance the performance and control duration, FourStar has developed patent pending Dual Action Release technology. This innovative technology regulates the release of microbials to the water surface and throughout the water column as the briquet slowly dissolves. It also protects microbial actives from ultraviolet breakdown until released.
Mode of Action
Bti and Bsph are naturally occurring soil bacteria that have insecticidal activity on mosquitoes. These bacteria contain protein crystals which, when ingested by mosquito larvae, rupture the gut wall of the larvae, resulting in larval death. To work most effectively, Bsph and Bti must be ingested by 1st through 3rd instar larvae. Microbials do not affect late instar larvae which have stopped actively feeding, pupae or adult mosquitoes.
To control mosquito larvae, place one (1) briquet in sites up to 100 square feet of surface area. For larger sites, apply 1 additional briquet for each additional100 square feet of water surface, regardless of water depth. When mosquito populations are high, water is heavily polluted, and/or algae are abundant, double the above application rate.