There are electric rotary cow brushes, that auto-start on touch by the cow. They swing around on an arm so the cow can control where it is being scratched. Ver

There are electric rotary cow brushes, that auto-start on touch by the cow. They swing around on an arm so the cow can control where it is being scratched. Very common in e.g. Sweden as far as I know. See for instance products by DeLaval [1]. [1] https://www.delaval.com/en-us/our-solutions/cow-comfort/cow-brushes/ https://www.delaval.com/en-us/our-solutions/cow-comfort/cow-...