Ingredients needed for the recipe

• 20 drops of essential eucalyptus oil (omitted if used for cats)
• Half a cup of yarrow powder
• Half a cup of neem powder
• 1 cup of food grade diatomaceous flour

Method of preparation and instructions for using the powder:

Put all of the above mentioned  ingredients in a shaker and shake them well. Apply the mixture by sprinkling it onto the pet’s skin. You will achieve this by brushing the pet’s fur in the opposite direction.

Make sure you apply this mixture along the pet’s spine because this area is the most important. It is also recommended to rub this powder onto the pet’s tail, legs and belly always making sure it gets to the pet’s skin.

You can use tools like cotton wool pad or powder puff when applying the powder. Avoid any contact between the powder and your pet’s nose and eyes.

Keep your pet flea-free by applying this powder once a month as a preventive  measure. You will manage to make your pet bug-free throughout the whole spring and also in the summer months when ticks and fleas are most prevalent. However, make sure you re-apply the powder after bathing your pet.

If you use this powder in order to relieve your pet’s bite symptoms, or to treat an active infestation, you need to apply it every other day. Do this until there are no traces of flea bites anywhere on your pet’s body. After this, apply the powder just for maintenance.

In order to prevent re-infestation, apply this same powder onto the soft furnishings, pet’s bedding, floors and windowsills. After applying, leave the powder to stay there overnight. Vacuum those places the following day. Repeat this procedure once a week for a whole month.

Source:
http://www.naturalcuresnotmedicine.com/make-effective-flea-tick-powder-pets/

References:
http://www.primallyinspired.com/homemade-flea-powder-repellent/
http://www.discoverneem.com/neem-oil-for-dogs.html
http://www.naturalcuresnotmedicine.com/naturally-get-rid-fleas-home-garden-pets/