Natural fleas, ticks or worms repellant for cats!?

Hi, I have three cats and lately, I've read about the high toxicity of fleas and ticks repellants and worms treatments. I would like to know if you had any success with natural repellant and treatment for cats, and if so, what do you use? Some people talk about adding garlic or apple cider vinegar to the... show more Hi,
I have three cats and lately, I've read about the high toxicity of fleas and ticks repellants and worms treatments.
I would like to know if you had any success with natural repellant and treatment for cats, and if so, what do you use?
Some people talk about adding garlic or apple cider vinegar to the food or water of the cats, but some don't suggest it.

I really need your advices and experiences, thank you so much!
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