Grease is the number one culprit of sewer pipe overflows and backups. Sewer overflows and backups can cause health hazards and harm the environment.
A convenient, mess-free way to dispose of cooking grease is to pour it into an empty jar, can, or other container. Screw the lid onto the jar, or wait for the grease to cool and harden in the can. Then, throw it in the trash.