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August 18, 2025 2 min read
A clear worming schedule protects your dog and your family. Intestinal worms are common and heartworm is a separate risk spread by mosquitoes. Build a simple plan you can follow every time. This guide was prepared with input from our lead vet, Dr. Feargus McConnell, BVSc.
Every 2 weeks until 12 weeks of age.
Monthly from 12 weeks to 6 months.
Then every 3 months for intestinal worms, unless your product label advises otherwise.
Always follow the label for the product you use and ask your vet if your puppy has health issues or is underweight.
Most adult dogs need intestinal worming every 3 months. If your dog hunts, eats raw meat, or lives with children, stay strict with timing. Heartworm prevention is separate unless you use a combo product.
Start from puppy age as advised on the label and continue year-round. Monthly chews are a simple way to cover heartworm alongside fleas and ticks. If you miss doses or are switching products, ask your vet if testing is needed.
Add a repeating phone calendar event on dose day.
Keep the box near the food bowl as a visual cue.
Assign one person as the “dose captain” in busy homes.
Weigh your dog and pick the correct weight band every time.
Check minimum age before first use.
Dog products for dogs only. Never use a dog product on a cat.
Do not stack different wormers unless your vet tells you to.
Simparica Trio Chewable Tablet for Dogs — monthly chew that covers fleas and ticks, heartworm prevention, and intestinal worms when used as directed. Match the weight band and follow the label.
Can I align worming with flea and tick dosing?
Yes. A combo product makes scheduling simple. Dose on the same day each month.
My dog missed worming for a while. What now?
Give a dose today and talk to your vet about whether testing is needed before restarting heartworm prevention.
Does my indoor-only dog still need worming?
Yes. Worm eggs can come in on shoes and in soil. Keep to the schedule.
Need help building a schedule for your household?
Tell us your dog’s age, weight, and lifestyle and we will map it out with you — contact us.
Keep your dog protected with a clear schedule, on-time dosing, and a product you can give every month without fail.
Join our community of caring pet owners and get 10% off your first order.