Check out our informational video on how to install this item. Don’t forget to subscribe and like the video we will be posting new beekeeping Videos weekly. https://youtu.be/hHEDHLODxwk Any of the formic you will be receiving will not be expired. Make sure when you were purchasing formic that the expiration date has not expired. UP FOR AUCTION: MITE AWAY PLUS BEEHIVE STRIPS or FORMIC PRO. To treatment pack contains 4 strips. Will treat up to 2 colonies, beehives. This item is not expired! Expiration date is 2022. With brand new packaging, Outlasts the original Formic or Mite Away Quick Strips. Extremely longer shelflife. 2 years from the date of manufacture one year longer than the original Formic Mite Away Quick Strips. Popular mite treatment strips Formic pro causes mortality to both male and female VARROA under the brood As well as to the VARROA on the adult Bees. Use Formic Pro as part of an integrated pest management “IPM” program. There are two treatment options when local thresholds are met option1— 2 strips for 14 days or option 2— 1 strip for 10 days remove and replace with second strip for an additional 10 days Kills adult Varroa mites and up to 95% of the varroa under the cappings Thin strips are to be placed atop frames in the hive box, between hive parts 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!