I have a Beagle that scratches his ears constantly, and has for the last 2 summers. His ears are red and irritated. Vet suggeste

[wallofsam]

I have a Beagle that scratches his ears constantly, and has for the last 2 summers. His ears are red and irritated. Vet suggested changing foods, it didn't work. It only happens in the summer, winter time he is fine. Has anyone ever heard of a dog being allergic to dirt or grass. I don't want to spend $300 on a blood test for allergies. Any help would be appreciated....Thanks