They already have the "Happy Cow Brush" :) | alt Hacker News

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mike978 • yesterday at 8:38 PM • 0 replies • view on HN

They already have the "Happy Cow Brush" :) https://www.youtube.com/watch?v=m9Kynijqps4

or a more manual version https://www.youtube.com/watch?v=h2O7Z7cJB-w