Check the listing for details. EZ-OX Varroa Mite Control. Condition: New. Listed at 23.95 USD. EZ-OX® Oxalic Acid Powder . THIS IS A PACKAGE OF 400 GRAM POWDER EPA Registered Oxalic Acid for Varroa Mite Control on Honeybees. PLEASE READ!! We do not ship to Alaska, California, or Hawaii OR DC. EZ-OX® works in all vaporizers. A new legal dose of 2 grams per deep! Made from the Best Oxalic Acid you can buy! Fresh, Clean and Tested to be free from harmful unwanted impurities. Made in the USA by Mikes Bees, LLC, a disabled Veteran and Family owned business. We are Beekeepers too! Every gram we sell is monitored and reported to EPA for source, purity and age. No other OA does this. EZ-OX Oxalic Acid Vaporization to control Varroa Mites on Honey Bees. Can be used in all vaporizers for OAV, used in the dribble method or package honey bee method. Directions are on the Label. Each bag treats 100 double deep hives with four grams each! Not sold to California, Hawaii or DC!