Ortho Wasp B Gon Max Wasp Killer Foam (400g) is a, non-staining, water-based, foaming insecticide designed to kill wasps, hornets, and yellow jackets on contact. It features a powerful jet spray that reaches up to 6–8 feet (2–2.5 meters), allowing for safe, distant application to outdoor nests. The formula expands to seal nests, ensuring fast knockdown and residual control for returning insects.