Formic Acid Stick! Each pack contains 20 sticks Formic acid; It dissolves very well in solvents such as water, methanol, ethanol, acetone and ether. Another name for formic acid is ant acid. It was first found in nature in the secretions of ants and was extracted from there. One of the most effective methods of combating varroa is the application of formic acid to colonies. Formic acid is an organic acid. It is widely used by organic honey producers. As a result of research, it has been determined that it does not leave any residue in honey and beeswax when used at least 15 days before the nectar flow period in spring and after the honey harvest in autumn. It is also used as a method of combating tracheal mites. In liquid formic acid application, the solution should be 65%. This means that the formic acid solution to be applied to the colonies is 65% Formic acid and 35% water. Varroa dies because it is affected by the vapor of this solution. In practice, formic acid solution should not be brought into direct contact with bees. Therefore, some toilet paper or pieces of paper are spread under the cover board, on top of the brood frames and 40 ml. The solution is injected onto the paper. A piece of paper is used to absorb the solution and prevent it from dripping on the bees. Varroa is killed by evaporating the formic acid solution inside the hive. 85% formic acid can be used in Pollen Trap hives.