Duct Cleanliness

{Air {ducts|air ducts}|Duct} {should|ought to|must|need to} be {{free|totally free|complimentary|cost-free} of|without|devoid of} {molds|mold and mildews}, {pollen|plant pollen} grains, {bacteria|germs|microorganisms}, {decaying|rotting|decomposing} {matter|issue}, {{dust|dirt} {mites|termites}|allergen} {and|as well as|and also} {residues|deposits} from chemicals or {household|home|family|house} {products|items}. Although {just|simply} {a few|a couple of} {people|individuals} {ensure|guarantee|make…