Is OnGuard on Sale? November 2026

Questions and answers

What does OnGuard Plus flea and tick spot treatment protect against?

It targets fleas and ticks, including the species that carry Lyme disease and other tick-borne illnesses. The active ingredients kill adult fleas and ticks on contact and provide residual protection between monthly doses.

How often do I apply OnGuard Plus?

Once a month. The 12-dose pack covers a full year. Apply to the skin between the shoulder blades so the dog cannot lick it off.

Is OnGuard Plus safe for puppies and pregnant dogs?

Check the label for the minimum age and weight before use. The 23–44 lb formula is dosed by weight, so never split it across smaller dogs. Ask your vet if your dog is pregnant, nursing or on other medication.

What is the difference between OnGuard Plus and standard OnGuard?

The Plus line adds an insect growth regulator that stops flea eggs and larvae from developing, breaking the flea life cycle. Standard OnGuard kills adult fleas and ticks but does not include that growth regulator.

Where can I find OnGuard's warranty and returns policy?

OnGuard backs its products through the retailer you buy from, so returns follow that store's policy. Keep your receipt and the packaging in case you need to make a claim.

Are there OnGuard discount codes?

Deal.ai checks what OnGuard products actually cost at every store, so a real markdown shows on this page as a deal as soon as it starts, and each product's page has its price history to tell a sale from its usual price.