✔ 最佳答案
If it is not mites, it could just as easily be fleas. You can get a single dose of Frontline or Advantage Spot Flea Treatment for really cheap, around $10. One treatment lasts a whole month. You can get this at any veterinary office. You don't need to make an appointment or pay for a vet visit to get it, you just walk in and buy it from them. Make sure you get Frontline or Advantage, most of the other brands do not work & can even harm your pet.
Also, at the mere possibility of it being mites... you could just call around vet offices and ask if they would sell you the ear drops to treat for mites. Most of them will sell you the ear drops (which are very cheap) without having to pay for an appointment.
If it's not fleas or mites, it could be allergies. Try to switch his food to a GRAIN-FREE brand, such as EVO Small Bites, Wellness CORE, Orijen, Legacy or Taste Of The Wild.
參考: Veterinary Technician, Dog Owner