TailCareWhere the interval comes from
The product decides it. Flea, tick and worming treatments come as spot-ons, tablets, chews and collars, and they don’t all last the same time, even when they treat the same parasite. The label or the leaflet gives the interval; enter that here, and ask your vet if your pet’s weight or health has changed since it was prescribed.
How often a pet needs worming depends on how it lives. ESCCAP UK & Ireland, the parasite experts’ body, advises tailoring worming to each pet’s lifestyle and risks, and says dogs and cats that hunt should be wormed more often than those that don’t. Your vet can tell you what that means for your pet.
In the United States, the American Heartworm Society recommends heartworm prevention all year round for dogs and cats.
Sources
- Worms, ESCCAP UK & Ireland. Checked 7 November 2026.
- Heartworm prevention for dogs, American Heartworm Society. Checked 7 November 2026.
- Heartworm in cats, American Heartworm Society. Checked 7 November 2026.
Questions
How often should I flea and worm my pet?
Follow the label of the product you use, or your vet’s advice. Products differ: some last a month, others longer, and how often your pet needs worming depends on things like their age, what they eat and whether they hunt. The planner works from whatever interval you enter.
What if a treatment is late?
Give it as soon as you remember unless the label says otherwise, then change “Last given” to that date so the rest of the year moves with it. If you’re not sure, ask your vet.
Can I plan several pets at once?
Yes. Add a treatment for each pet and product, up to 8. The year chart shows one row each and the calendar file includes them all.
This page isn’t veterinary advice. Always follow your vet’s instructions and the medication’s label.