Two white JRT's itching like crazy in summer

by Jeffery Adam Corr Sr
(Oceanside, California)

My poor poor puppies, actual ages are 6 & 8, but they are still my puppies, itch during summer months. They itch so much they have wore the fur away, by the way one is a smooth coat and the other is a broken coat. Took em to the vet and was told that they were allergic to fleas and was given antibiotics and some stuff for the allergies. Funny thing is, they do not have fleas and if fleas are seen we treat them with advantage. By the way the antibiotics and the allergy medicine did absolutely nothing. We tried various hotspot sprays as well as ear and skin cleansers. We also tried adding fish oil tablets on their food, which by the way is Beneful, and because this itching problem is only evident in the summer leads me to beleave that it is not the food. I hope someone has some ideas as my poor poor puppies are scratching their selves to a state of misery for them and for us. Please help