I use DE for myself, my chickens and dogs. A natural herbal parasite wormer I use is a Parasite Cleanse Tinture, it contains Cloves, Green Hull of the Black Walnut, Quassia and Wormwood. You can research these herbs and incorporate all or some of them in your worming routine at a very affordable cost and a natural cleansing which is less toxic and harsh on their system. And adding raw apple cider vinegar to their drinking water.
Quassia has been used for centuries as an effective vermifuge, an agent that kills and expels worms in the intestines (especially roundworms) and nematodes. Used externally as a lotion, it kills parasites, such as lice.
Black Walnut Hull is a powerful astringent and anti-fungal herb that is used for expelling worms, parasites, candida, canker sores, cold sores, fungus, tuberculosis, herpes, eczema and is a mild laxative.
Cloves kill intestinal parasites and exhibits broad anti-microbial properties against fungi and bacteria, thus supporting its traditional use as a treatment for diarrhea, intestinal worms, and other digestive ailments. Like many culinary spices, Cloves helps relax the smooth muscle lining of the digestive tract.
Wormwood has been used medicinally to expel intestinal worms for over 3500 years. Use caution when using wormwood.