A few drops of an essential oil such
as pennyroyal should be sufficient.
The product is used for flea control and is available in flea shampoos, powders, and
as pennyroyal oil.
Not exact matches
Avoid products that use geraniol or
pennyroyal essential oils
as they can be toxic to dogs.
This example is very sad, but stands
as a testament to the dangers of using
pennyroyal essential oil for any reason.