Apply corticosteroid creams to the allergic skin lesions. Mites Labeled pesticides are effective in controlling mites. Quarantine affected horses. Lice Animal sprays can easily control lice. Do not stable horses near poultry.
Good grooming is also important.
Ticks Pasture mowing and brush removal. Rotate to pastures with lower tick populations. Blister Beetle Blister beetles get their name from the fact that they produce a chemical, cantharidin, that can raise blisters on human skin. Cantharidin, taken internally, also is toxic to a number of mammals, especially horses. Blister beetle poisoning has become a problem for horse owners in recent years because of a combination of blister beetle biology and alfalfa harvest practices.