12 Month Frontline Plus for Dogs 89 132lb.

These is the best stuff I ever used. I live in a climate where fleas proliferate and this stuff keeps the fleas under control. I would never use another product. We have a lot of rain here too and this is waterproof. We use a monthly application due to the flea problems here. If you live in a climate where it gets cold you could use it every three months in the cold season when fleas die off. I would pay any price for this product because it works so well.