Please use caution when using your garbage disposal to discard kitchen waste in your sink. Improper use will cause waste to get trapped in the building's shared plumbing lines and cause damage, or a backup, in your unit or neighboring units. The following is a list of items that should never be put down a disposal:
-Rice and pasta
-Animal bones and egg shells
-Stringy and/or tough peeled veggies (ie. celery, asparagus, potato peels and lettuce)
Only a small table scraps should go down a disposal. When I doubt, throw it away in your trash can to avoid a call to the plumber.