In general, weekly brushing sessions will keep the Australian Shepherd's waterproof, double-layer coat looking its best. During shedding season, though, more work will be required. During this period an undercoat rake can be used every two or three days to remove the abundant dead hair, followed by a cleanup with the wire brush. Aussies often work and/or play outdoors, so it's not unusual for them to come in dirtier than they left. But unless they've gotten into a particularly messy situation, they require a bath only occasionally. As with all breeds, the Aussie's nails should be trimmed regularly.