While duct cleaning goes a long way towards reducing airborne pet dander within homes, it may not completely resolve allergies for those extremely sensitive to animal proteins. The reason being that other reservoirs for animal dander exist. Upholstered furniture, carpet fibers and fabrics like pet beds all collect shed pet flakes over time. So while duct cleaning eliminates the major conduit distributing allergens, additional mitigation steps help fully alleviate symptoms. Washing bedding on high heat, vacuuming with HEPA models, using leather furniture vs. cloth and keeping pets out of bedrooms preserves a cleaner sanctuary to escape allergens.