ill take outdoor all day over dusty indoor bud. dust: "human and animal hairs, paper fiber, components of soil, skin cells, pollen, clothing fibers, food particles and smaller amounts of many other materials found in the house. Dust mites feed on the organic particles in dust and can also cause heath issues such as asthma and allergies. These tiny creatures excrete enzymes from their stomach to digest their food. This combines with the feces and deceased corpses of other dust mites to become a component of household dust" yeah im good on that.and for for those saying "eww" what about outdoors.. u think mother nature is "clean" no shes a dirty whore!