HOW THE INFECTION IS SPREAD
Sarcoptic mange mites are usually spread by direct contact from host to host. While mites can live off of a host for days to weeks depending on their life stage, they are only infective for 36 hours which means that environmental decontamination is generally not necessary.
Mite infections on humans are self-limiting (i.e., they go away on their own) as the mite is not able to complete its life cycle on the "wrong" host. The condition is extremely itchy, though, while it lasts. The mites are most active where skin is warm (in bed and where clothing is snug).
IF A SARCOPTIC MANGE ANIMAL IS PRESENT IN THE HOME,
IT IS A GOOD IDEA TO WASH ANY BEDDING IN
THE WASHING MACHINE (OR REPLACE WITH NEW BEDDING),
AND WASH ANY COLLARS OR HARNESSES.