Mann Lake DC-799 Apivar Varroa Mite Treatment Honeybees Honey Bee (10-PACK) New. EPA APPROVED! New this year with a GOOD expiration date., Again this is not expired. One of the best treatments for mites that we have today. This treatment is a 42 day treatment. Just simply hang two strips per every deep box. This treatment is one of the few treatments that you can also use for smaller equipment such as Nucs and Eight frame. Don’t forget to check out all my other beekeeping equipment auctions. If you do not see it I can get it. Also if you have any questions about this item in particular or beekeeping in general please do not hesitate to message me. I will answer them as best I can. I have been beekeeping for 30+ years. Thanks again for looking and have a great day!