Thank you for visiting our ebay store! Apivar is an amitraz based varroa mite treatment, Proven to be safe & effective. Strips are placed in the brood chamber, one Stripper 5 frames of bees, & the active ingredient is slowly release over a six-week period when the bees come into contact with the Strips. No significant residue is left in the hives, andup to 99% of mites are killed in one application! – Kills up to 99% of mites in one application – Amitraz is continuously released over a six week period when the bees come into contact with the Strips – Proven to be safe and effective – Leave no significant residues in the hive – Use one strip per 5 frames of bees – DC-799 Apivar (10 Pack)Mann Lake DC-799 Apivar 10 Pack