Recommendation for all natural tick repellant

[Kamela & Beckett]

Hi all! While we live in a suburban setting with a fenced in yard (no wooded areas), in the past few days we have found numerous ticks on Beckett. Luckily, none were embedded yet, but as he is a big poof ball, we are bound to miss one at some point. I'm looking for an all natural topical repellant that we can use on him. He is currently on Sentinel for fleas/ heartworm and I don't want to change. I'm not really sure how the oral type works with ticks anyway. If a tick has to bite your dog to be killed, doesn't that defeat the purpose? We're having some issues with Beckett with presumed allergies and itching, so I'd prefer not to add anything else that he injests nor do I want to use a topical that is applied monthly (as I assume I'd have to switch from Sentinel). Hoping an all natural spray will be the way to go. Anyone use one that's well tolerated by your dog and is effective?? Thanks!

[Linda, Charlie Brown and Beau]

I totally agree with yo on Trifexis & Bravecto.  I hope you can find a winning combination. Beckett is a doll and what a great name!