QuietWean calf weaners reduce the stress associated with weaning. Flexible, lightweight QuietWean nose flaps prevent calves from nursing, but allow them to graze and maintain physical contact with cow. Gradually breaks the cow-calf bond over just a few days, while the pair is still together. Lightweight, non-invasive QuietWean nose flaps are made from a very flexible plastic, making them easier to apply. QuietWean calf weaners are typically left in calves for 4-7 days before separating the calves from their mothers. Washable and reusable.