Proper dental fixer disposal is required by the EPA. We have a special agreement with UPS to ship used film processing fixer using our heavy-duty 2.5 gallon jug with our special silicone gasket easy-seal cap, and a strong double-wall box. Simply pour or drain chemistry into FixAway™. When full, put the cap on and apply the pre-paid label to the box to ship it back to XRS. We provide you all documentation that it was shipped, received, and disposed of according to EPA guidelines.