If you can still see fleas on your pet after treating them, it would be natural to think that the treatment isn’t working. However, no product can repel fleas from jumping onto your pet, so it’s normal to continue to see fleas after treatment as your pet can pick up new fleas from the environment at any time.
If you’re fighting a home infestation, it’s highly likely that you’ll see fleas on your pet for 3 months or more as it can take this long to get rid of the infestation. Don't worry if you see fleas for several days in a row, today’s flea is not the one you saw yesterday. Any fleas jumping onto a treated pet will be killed within 24 hours if they’re treated with FRONTLINE PLUS^® or FRONTLINE^® SPOT ON, or within 6 hours if they’re treated with FRONTLINE TRI-ACT^®. If you have any concerns, please contact our technical services team at petsuk@boehringer-ingelheim.com or your veterinary surgeon.
Find out more about why you may still see fleas after treating your pet.