My cats are all treated with Frontline in the spray bottle. It works for the most part. My inside/outside cat keeps bringing in ticks stuck to his fur! They are not biting him though. Anything safe I can feed him or wash him with? I’d prefer natural stuff, but I have no objection to any kind of soaps that might have chemicals in them .. as long as they are safe! It needs to repel to keep them off him totally and not just from biting him.

Thank you in advance :)