It's getting to be time to consider flea control and I'd like to stay away from the chemical applications available. Is there any additives I can put in their food that will repel fleas? If so, what would be the amount to use? I have three dogs that spend a lot of time in the house and it's important to be able to control the flea situation both for their health and in the house. I've heard of sprinkling brewer's yeast in their food but can't find reference to it anywhere on the internet. If I have to use the FrontLine types, which one will do the job without harming my dogs.
Please advise.