I'm not a fan of the chemical flea and tick products. I like to search for herbal remedies for most things I can help prevent. Here is a little article I bookmarked that lists a few natural alternatives to preventing fleas and ticks. Natural Flea and Tick Repellent I've been following this since last summer and it's been working great. Keep in mind we do go out often to parks and hiking trails. I have noticed an improvement in the overall health of my dog, as well.