I don't have flea problems, but do use essential oil spray for ticks. This was bookmarked, flea repellent in the article.
I use a carrier oil (Almond) in the recipe listed, it makes the oils disperse better. I also use an ACV based spray. But this one in the article probably smells better!
Essential Oils as Flea repellents
This is my copy/pasted recipe for different oil/sprays
Rotate these every couple weeks if you want:
This is the recipe from a holistic vet(if you can share the oils with friends it helps offset the cost of them)
One drop each:
peppermint, cinnamon leaf(not bark), lemongrass,, clove, thyme, sweet almond to carry(1/2oz)
Five drops per 10# of dog applied on the neck, and smooth down the back, or you can apply by dabbing to the collar if it is fabric.
2 drops lavender, 6 drops geranium, 4 drops peppermint, 1/2 oz carrier oil(olive or almond)
I've never used these as I prefer to use the spray for better coverage. The above seem too concentrated to apply directly, IMO.
Dr Pam's Flea and Tick Spray
8 oz purified water
8 oz vinegar ~ACV
1 tsp each:
spearmint oil, peppermint oil, citronella oil, lavender oil, and lemongrass oil.
Also you can use a TBS olive oil or almond oil(2 oz) to carry it.
Shake well~spray as needed.
This brand is the oils I used, purchased at a local health food store:
Mix 5 drops of oil of rose geranium & a drop of oil of lemongrass per ounce of water (filtered). The amount of lemongrass can be increased; do not lessen the rose geranium.
20 drops Rose Geranium essential oil in a base of 1 tsp vodka/1 tsp glycerin (both not necessary but will help disperse the oil better)/distilled water (4 oz spray bottle but would recommend same recipe in an 8oz bottle for small dogs) sprayed on daily
Neem oil or soy bean oil as the base oil, bothare also insect repelling. With 1-2 drops each per tablesp of the following: clove, cedar wood, citronella, lemongrass, lemon eucalyptus, and rosemary.