Storage and Expiration

A woman working at gardening table.

Milorganite like all fertilizers, should be used as directed and stored in a cool, dry area out of the reach of children and animals.

Expiration

Milorganite has no expiration date. It will work indefinitely if stored properly in a cool and dry area.

Storage

Milorganite should be stored in a cool, dry area out of the reach of children and animals.

Some dogs may be attracted to the smell of Milorganite and try to eat it. Store Milorganite in a sturdy container or in an unreachable location. If your dog eats Milorganite, there are no long-term toxic effects. Short-term indigestion can occur for up to 24-48 hours.

Disposal

Please help keep Milorganite from entering any bodies of water by following the fertilizing application rates and not fertilizing before a heavy rainfall and within 10 feet of any waterway. After fertilizing, sweep excess fertilizer from solid surfaces, such as driveways, decks, patios, streets and sidewalks, back onto the lawn.