Suitable for use around the garden, home, building site, farm or stables and are perfect for both solids and fluids. To loosen dried mix, just apply pressure where necessary. Manufactured using heavy-duty polyethylene and are 100% recyclable. Black Standard Duty Tubs are made from recycled material, these tubs feature comfortable handles and are UV stable.Yellow and Green heavy-Duty Tubs are made from 100% virgin material, these tubs feature super-strong comfortable handles and are both frost-resistant and UV stable.