We buy fleece. Sheep shearing is an art. The fleece can be dirty. Very. Or, clean. We get average, pretty dirty fleece. It has lanolin (grease) – a lot, grass, dirt, and poop. TMI. It has to be processed. A lot of times it is stored in old pillow cases… till washed. Our cats? They love to wallow in the fiber. It’s not ideal to do so. The fleece could get felted. Ha! I swear, we’d have sheep grazing outside the house if only the homeowners association would allow. Do you wallow? Willow wallows.