The recipes below were comments and reviews of Plant Therapy USDA Certified Organic Eucalyptus Essential Oil at Amazon. I originally bought the eucalyptus oil as a mosquito repellant mixed with olive or almond oil. Then I saw how reviewers were using it for flea and tick control. My own easy tick prevention recipe is below.
Cathy D - reviewer for Amazon says
I used the Eucalyptus oil in a homemade flea powder and it works great.
Mix all ingredients together and put in a shaker top container. I used a mason jar with a shaker top lid (I got my mason jar shaker top lid at Christmas Tree Shop, but you could make your own by drilling holes in a regular mason jar lid).
Apply from head to tail along your pet's spine in dry conditions. Brush your pet's fur going the opposite direction so the powder comes in contact with the skin. Avoid the eyes and nose.
Rub the powder on the belly and legs. Try to get the flea powder on as much skin as you can.
Brushing the fur in the opposite direction and applying the flea powder with a cosmetic puff works really well. The fleas seem to like the tail, the area right above the tail and the belly/groin area so make sure to pay extra attention to those areas to get them well covered.
Another Amazon customer's Flea and Tick Recipe:
I use it (eucalyptus oil) once a week all over them and it works fine.
I used the eucalyptus oil to mix with my Yarrow, Neem, Diatomaceous earth to make a flea and tick potent for my 4 dogs. I only use organic products on my animals and this works very well as a preventive. You have to mix together and put in a shaker of some kind. I use it once a week all over them and it works fine. In fact, I have seen ticks drop on the floor after walking on them. It takes some time but well worth using and not using chemicals.
Tara's Tick Tea
This works for humans, too. But this is a tea you ingest over a period of a few days before you hang out in tick territory. You have to get it in your bloodstream. I drink it a few times a week during tick season. I put a small amount of tea in my cat's water every day and it has prevented ticks on her. Since getting two ticks in one year, I found something that has worked - haven't had a tick latch onto me since. It also seems to work against fleas on my outdoor cat. This amazing stuff is cistus incanus - (rock rose). Amazon now has it in tincture. I had been getting mine from England. It was expensive and difficult to find an organic source. Now word is catching on about it's effective anti-tick properties so it's easy to find.