Cat's flea treatment not working. Can I safely apply Frontline now?

Cats can be sensitive to flea medications. For that reason it is safest to wait 2 weeks between products even with different ingredients. Your vet can prescribe a cap star which is a pill that will last for a day that can help while you wait the remaining time

The two treatments are not closely related but I would still recommend 7-10days before reapplying. You do not mention why you washed off the advantage but I would recommend combing with a flea comb to remove fleas in the meantime if still present. It may be worth considering using comfortis or capstar tablets if he does not tolerate spot on medications (it is often the carrier and not the active ingredient that pets are sensitive to)

Hi and thanks for using Petco Pet Education Center, formerly Petcoach! Sorry to hear that Negrito is having a flea problem. Since Frontline Plus and Revolution are 2 totally different products, you can apply the Revolution now and not wait until the full month is done. You shouldn't see any problems and if you do, I would advise calling your vet. Very occasionally cats and dogs will have problems with one topical product and not another. Just make sure that you apply it correctly right up over the neck where Negrito can't lick it off as soon as it is applied. Good luck and I hope Revolution works well for him. I do believe we are starting to see some problems with Frontline as I have witnessed the same problem last summer when using Frontline.

Yes, you can give Aries Capstar in addition to the topical Sentry medication. Be sure to continue applying topical flea prevention monthly in order to break the flea lifecycle. When he is due for the next dose of medication, I would recommend using a higher quality (both safer and more effective) flea preventative, such as Advantage, Revolution, or Bravecto. If you have any other dogs or cats in the house, be sure to treat all pets with good quality flea prevention. I hope this helps and that all goes well!

It is safe to reapply the Frontline now, but in my experience, it doesn't have great flea protection. You may have better luck with Advantage products or a Seresto collar. The best flea protection is the prescription oral flea preventatives, like Bravecto or Nexgard.

Generally flea products should not be reapplied within 2-4weeks. Many flea products (including sentry) only kill adult fleas after they bite your pet so there can be a timeframe in between where you may see the adult flea before it becomed unwell and dies. I strongly recommend you use an insecticidal household spray to kill any eggs and larvae in the house/bedding areas in such a severe infestation (5% of the fkea population is adult at any one stage; 95% are eggs and developing larvae). Seresto could then be applied after 14days

Wait at least one more week. Be sure to apply the liquid directly to the skin, not on the fur. If Cricket has been bathed, or will be bathed, wait at least 2-3 days before or after a bath. These topicals use the oils in the the skin to spread. A bath removes the oils which can affect the treatment. Use the appropriate size for her weight. Don't forget to treat the environment, since most fleas live off of the pet. Vacuum everywhere and dispose of the bag or empty the canister outdoors immediately after. Wash all bedding in the hottest water allowable by fabric and dry in the dryer. Use a cat safe area treatment to prevent reinfestation.