LunaseeStudios / Shutterstock.com Milk & Juice Cartons Put in Recycling Cart/Bin LunaseeStudios / Shutterstock.com Empty the cartons of any liquid or residue and, if possible, remove any plastic or metal caps or spouts before recycling. Caps from milk and juice cartons should be placed in the garbage. Ways to Reuse Create Disposable Cutting Boards A flattened carton will make a great disposable cutting board for preparing fish or draining fried foods. The wax coating will prevent the juices, oils or grease from leaking. Use as Floor Protectors Protect your floors when you’re moving furniture: start by placing broken down cartons under the legs of chairs or tables.