Hi Buzz&Mocha,

Though hots spots do go along with allergies, they are generally caused or aggravated by moisture. The antifungal shampoo is a good idea, but washing him may cause moisture to build up underneath the fur and caust more bacteria and yeast to grow. In order to get out all of that water right away, you should look into buying a high pressure blowdryer, or taking Buzz to a groomer that uses one. He should be completely dry at the end, especially on and around his hot spots. I don't have any other advice for you, but since it is environmental allergies that aggravate him, I would recommend that you move him into your house during the summer and only let him out for walks and pee-time.