Probably the fastest, most efficient and convenient container rinse method is pressure rinsing with metal hose-end attachments which puncture plastic and metal containers, producing a forceful spray of rinse water inside the empty container. By holding the container over the opening to the spray tank while rinsing, the rinse water can be captured as it drains from the empty container spout. Manual rinsing methods, such as triple rinsing, can be as effective as pressure rinsing, although anyone who has tried it will vouch that it's much more time consuming and labor intensive. Disposing of Rinsed Containers When rinsed according to label directions, pesticide containers are classified as ordinary solid waste and may be disposed of or recycled. Be aware, however, that some waste disposal operators will still turn away rinsed containers, even if they have adequate landfill capacity.
States also have jurisdiction over burning and burying containers on private property.
Contact your ag chemical dealer for state disposal regulations, and rules on burning or burying containers. Recycling Empty Containers Collection and recycling programs are available in a number of states. If you have the opportunity to participate in a recycling program, be sure to rinse all containers properly. Puncture container with special hose-end attachment. Spray inside of container on all sides for at least 30 seconds.