Demodex mites are a particular type of mite that causes canine mange. According to Mar Vista Animal Medical Center, demodectic mange is not considered contagious, but there are natural ways to treat existing demodectic mange. Medications can have harmful side effects, but using lemon juice and witch hazel can help to clean the sores and take away the dog's need to scratch.
Pour 56.7gr of witch hazel into a bowl.
Add 3 tablespoons of lemon juice to the witch hazel.
Pour 118ml of water into the same bowl and mix together.
Dip a sponge into the bowl, and squeeze the excess liquid out.
Blot the sponge onto the demodex mange sores.
Repeat this process until the solution covers each sore.