The best way to avoid fleas is to prevent them with appropriate flea and tick treatments. However, there are a few other steps you can take to get rid of them. One option is the Capstar tablet, which can kill fleas within 30 minutes. You can also give your dog a bath using flea shampoo and use a flea comb to groom them. It's also a good idea to wash all of their bedding and soft toys.