Formic Pro the next generation in formic acid treatments and is used to treat hives with varroosis, caused by varroa destructor in honey bees. Unlike Mite Away Quick Strips, Formic Pro has a longer shelf life of 24 months and no temperature requirements. Daytime temperatures still must be between 50° F – 84° F (10° C- 29° C). Strips are laid across the tops of the brood frames. Safe to use during the honey flow! A spacer rim is no longer needed for these strips, but you still need to wear the recommended safety equipment for acid. There are two treatment options: Option One: 2 strips for 14 days.Option Two: 1st strip for 10 days remove and replace with 2nd strip for an additional 10 days.10 treatments (20 strips) per pail. Store pail indoors in original container out of direct sunlight. We do not ship to Alaska/Hawaii, APO/FPO, Virgin Islands (U.S.), Puerto Rico, PO Box