When my husband went for allergy testing, I asked him not to be allergic to house dust. Of course, I didn't get my wish. His main allergies are house dust & animal dander. We don't have pets, I stored or got rid of most of the knick knacks, no carpet in the bedroom. My husband would like carpet throughout the whole house & I said that is a bad idea with his allergies. I try to clean a little more often but I'm not sure I will ever have a dust free house.