Be cautious.

There are concerns over Chipotle’s bowls, a new study finds the biodegradable bowls contain cancer-linked PFAs or “Forever Chemicals” that help the bowls hold hot, wet, and greasy foods.

The Environmental Protection Agency says the chemicals don’t break down in the human body and will accumulate over time.

The EPA also reports these compounds can cause cancer, developmental issues, and reproductive problems.

San Francisco is banning the bowls starting January 1st while manufacturers are said to be “scrambling” to find an alternative to the toxic bowls. But nothing currently exists.