Here's my routine:
Above freezing - If possible I let the sheepskin mitt "bloom" in clean water for a while so it releases any sediment. 2 bucket wash, one soapy water, one clean. Dunk mitt in soapy water, wash a panel, rinse it in the clean, flip mitt, repeat. Dry with microfiber towels and Eagle-1 Wax-as-U-Dry.
Below freezing - If possible I let the sheepskin mitt "bloom" in clean water for a while so it releases any sediment. Go to the carport power washer. Fill up bucket with soapy water. Wash truck. Rinse. Freeze as$ off. Dry with microfiber towels and Eagle-1 Wax-as-U-Dry.
Lazy - touchless
Go out and drive it through the trees and mud. Repeat.
