Protect Stored Comb Safely with B402 B402 (also known as Certan) is a preventative treatment that protects stored comb from wax moth damage. It’s a concentrated solution of Bacillus thuringiensis subspecies aizawai — a naturally occurring micro-organism harmless to bees, humans, and honey. B402 is environmentally friendly, leaves no residue, and is approved for organic farming use. Apply B402 after your honey harvest, before any wax moth infestation. A single application provides protection through to the following season. Key Features: 100% biological, no residue in wax or honey. Safe for honey bees and humans. High efficacy against young wax moth larvae. Suitable for organic beekeeping practices. Available in 5 oz. When to Apply: Use after honey harvest, when frames are being stored. B402 prevents damage — it must be used before wax moth infestation occurs. Also useful for protecting empty or decoy hives. Safety: Non-toxic and safe for bees, brood, and beekeepers. Unlike chemical alternatives (such as paradichlorobenzene), B402 leaves no harmful residues in wax or honey. Only the aizawai subspecies of Bacillus thuringiensis is used — the safest and most effective strain against wax moth. Protect your comb investment naturally and safely with B402 — trusted by beekeepers for clean, chemical-free wax moth control.
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