It’s tempting to rinse snow and ice from calf-feeding equipment with hot water. However, high temperatures cause milk proteins to stick to the equipment. Over time, this practice creates a tough protein film — the perfect breeding ground for bacteria, says Sam Leadley, a calf-management specialist with Attica (N.Y.) Veterinary Associates.

Instead, rinse all equipment with lukewarm water first — even in winter — before using hot water to wash.