The type of food that’s the worst for pipes is fats, oils, and grease. You should never put any of these down a pipe because they can solidify and cause pipes to burst. Restaurants are required by law to have a grease trap for any grease that inadvertently goes down to minimize the damage.

The occasional vegetable scraps going down a residential garbage disposal will not pose a huge problem, but keep out any fats, oils, or grease.