Allerpet has found that over 75% of those persons with pet-related allergies and who use it regularly find it to be almost completely effective. In all situations, Allerpet substantially reduces pet-related allergens on the pet and in the home. 25% of all allergies and 50% of all asthmatic diseases are directly traceable to dust mites. Allergy is the most widespread chronic condition in the world and the sensitivity to animals and dust mite allergens are two of the most common. Use Aller Per D for your dog and Allerpet C for your cat.