For over 30 years, Vet’s Best has blended natural ingredients that work together to comfort and protect your pet. Vet’s Best Flea and Tick Spot-On drops for dogs is great for monthly protection from fleas and ticks. Each dose kills and repels fleas and ticks by contact for up to one month. Easy to open, pinch and squeeze tubes can easily be applied between dog's shoulder blades. Made with an unique blend of natural oils like clove, thyme and cinnamon oils. One package contains 4 months supply. Made in the USA with US and globally sourced ingredients. Each dose kills and repels fleas and ticks by contact for up to one month for medium dogs 16 to 40 lbs and 12 weeks older Easy to Open, Pinch-and-Squeeze tubes can easily be applied between dog’s shoulder blades Made with a unique blend of natural oils like Clove, Thyme and Cinnamon oils Independently tested and proven effective One package contains 4 months supply. Made in the USA with US and globally sourced ingredients