Flea ?

According to this article, yes:

https://mosquitojoe.com/blog/how-to-get-fleas-off-my-dog/#:~:text=Apple%20cider%20vinegar.,dog%2C%20avoiding%20the%20eye%20area.

Here's the recipe and how to apply:

https://www.thespruce.com/homemade-flea-repellent-1388143

I'm sorry about the fleas. Are you worried about the chemical effects on your pet of a purchased one? We once had a flea infestation and it was a miserable experience. Minimize soft surfaces that can be their breeding ground. Use diatomaceous earth on any carpet and anywhere else you suspect eggs are being laid. They have a two week reproduction cycle, so vacuum every day and empty the vacuum outside in the garbage can after each session. I had my cats flea dipped at the groomers and cleaned and cleaned and cleaned. Diatomaceous earth is found in commercial preparations, but, is much cheaper bought by itself. I have mine in a bottle with a long nozzle. I keep a line of it at all outside walls, doorways and mats (it also works for ants and many other bugs). It isn't poisonous, but, avoid creating a dust cloud with it, but, will irritate your lungs if inhaled. It dehydrates the eggs, etc. I would not use vinegar, because it might irritate an animal's skin. Ask your vet for safe, effective methods they recommend. Good luck!

30 Ways to Naturally Prevent and Get Rid of Fleas on Dogs

https://jetpetresort.com/blog/dog-care/30-ways-to-naturally-prevent-and-get-rid-of-fleas-on-dogs/

Apple cider vinegar is one of the top options.

There are a lot of natural things people try out there but I think it really depends on your location. Some places the flea and tick problem is just so hard core that natural options just are not strong enough. For us the fleas aren't so much of a problem but the ticks are a SERIOUS one. We give our dog the vet prescribed Nutraguard once a month all year - it is the only thing that has worked.

Vinegar will dry your dogs skin. Go to Costco or Sams and get Frontline to kills the fleas. You can bathe your dog with Dawn and water. Make sure you treat your house and yard. I use Home Defense spray in the house and Amdro quick kill on the yard.

This shows how well it helps: https://www.youtube.com/watch?v=z6-bWfFsbFs

You should get a vet approved flea and tick repellent/killer. Your dog will be miserable with fleas that can also give them tapeworm. Ticks carry Lyme that you dog can get as well. Fleas can bite you as well and a female flea can lay 100's of eggs in her lifetime. Times that by half of her eggs being female. Take care of your dog and get something from the vet.

Apple cider vinegar. While it may seem like a stinky solution, apple cider vinegar balances the dog's skin pH levels, which makes the skin and coat an unsustainable environment for fleas to live. Dilute six cups of vinegar with four cups of water, add a dash of sea salt, and spray onto your dog, avoiding the eye area.

No you need something like mint oil and eucalyptus oil but you need to make shure you could put it on skin there are diffrent kinds of oils or you could use Avon’s Skin so soft spray and spray there fur before they go out it works well.

Plenty of answers here to get the fleas off the dog, but will be pointless unless your home gets cleaned up too as well as your yard. I have many pets. I spray the perimeter of the property and base of the house about once a month with vinegar. Be sure to spray on ground only - vinegar will kill plants and make paint peel over time.

Mi t will work try some mint and lavender oil mixed with aittle I've oil or coconut oil like 1 tablespoon then rub all through thefur

The best is the vet applied "Advantage" It is a sure thing

Be incredibly careful about oils as many are poisonous to dogs. I’d avoid vinegar without talking to my vet first, seems it’d be harmful to their skin. Topical flea stuff like Frontline is the best option.

Go your vets and get "advantage" for dogs, worth every penny.🐶🍒

Here's a helpful article for thathttps://dogcarellc.com/blogs/news/what-kills-fleas-on-dogs-instantly