Went off and spent a ball of money on separate cluster/pulsator lid on the dump bucket, and ended up throw it in the corner of a shed after one season. It worked well but way too much hassle to keep clean, so ended up just spreading mastitis between cows. So back to Just using the normal clusters, and dip afterwards.By chance do yee use a separate set of clusters for use with the dump buckets for a mastitis case etc that main units are kept unifected with a mastitis cow