Demodectic otitis can be treated topically with a 0.01 % solution of ivermectin (Acarexx — Idexx) or a 0.1 % solution of milbemycin oxime (MilbeMite Otic Solution), but they are not labeled for this use.
We have treated
demodectic otitis topically with a commercial solution containing 0.1 % milbemycin oxime (MilbeMite Otic Solution — Novartis Animal Health); this use is considered extralabel.
Demodectic otitis externa is best detected by collecting samples from the ears with cotton swabs.