I would file that under the same category as brewer's yeast and garlic "preventing" fleas.
It is claimed that a specific type of hops kills the worms, but considering the concentration and dosage, it doesn't make sense.
Definitely. And you can also freeze re-hydrated portions if you like. Drop baggie/container into a hot water bath before going for a walk, and it'll be perfect for feeding by the time you get back.THK says that it's ok to mix up several days worth of food at a time
No, not necessarily. Antihistamines are really only 33% effective in dogs with atopy. Also, different products may or may not be helpful, so if benadry doesn't help, it's worth a try to see if other products do.if benadryl isn't helping, I might think that it's something with the diet