Hartz UltraGuard OneSpot Treatment For Cats & Kittens
3 Tubes x 1 mL Each
Hartz UltraGuard OneSpot Treatment for Cats and Kittens stops the flea life cycle by killing and preventing flea eggs and flea larvae for up to 30 days.

Topical drops are a convenient once a month application


  • Contains 3 tubes x 1 mL each
  • Specially formulated for cats and kittens
Directions For Use:
  1. Remove one applicator tube from package and hold in an upright position.
  2. Pull cap off. Turn the cap around and place on top of tube.
  3. Press cap down to break the seal of tube.
  4. Remove cap carefully. Position the tip of the tube on the cat’s back between the shoulder blades and squeeze out the entire contents of the tube.
  5. Repeat every month.
Do not use this product more often than once every 3 weeks. Reapply every month for continual pest control in situations where thee is an ongoing risk of pest infestation. Do not use on animals under 8 weeks of age. Do NOT administer by mouth. Consult a veterinarian before using on sick, aged, pregnant or nursing animals or animals receiving drug or other pesticide treatment.

Active Ingredients
: (S)-Methoprene 2.9 %

Keep out of reach of children.

HUMANS: Harmful if swallowed. May cause eye irritation. Avoid contact with mouth, eyes and clothing. Use rubber gloves when applying product. Avoid contact with pet until dry. After handling or applying, wash hands (or any other skin that came into contact with the product) with soap and water.
PETS: harmful if swallowed. Avoid contact with the cat’s mouth, face, eyes and genitals.

Read entire label before using. Retain packaging information for future reference.

For use only on cats.

We are only able to ship this item to Canadian customers.
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Justyn: about a year ago

I've used this product a few times when my cat has gotten fleas and it works perfectly. Make sure you put this behind your cat's head on the skin so they can't lick it off.

Josee: more than a year ago

Please do not use anything Hartz brand, especially these flea and tick treatments, they can kill your animal. Please go to your vet and buy a better quality brand, do your research.

Cindy: more than a year ago is a simple & amazing website. This site is perfect for people that don't have time to be running from store to store trying to find what you want. I would definitely use this site again it has what I was looking for and shipping was very quick. Thank you

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