Which flea product is better the front line or the Advantages

Have to be really careful with Trifexis, a lot more side effects than using Advantage and Heartguard.

Me personally prefer Trifexis since it protects against heart worm, fleas and other parasites, it's quite expensive but remember it's not just a flea protecter but for heart worm and other dangers too, shop around, you can save a few $$

Trifexis

Revolution