Can You Compost Egg Cartons?

Yes, egg cartons can be used as compost ingredients if they are made of cardboard. Cardboard egg cartons would be considered brown compost matter (source of carbon).

Make sure you cut the egg carton into smaller pieces before you dump it in the compost heap. Do not use the egg cartons made with foam or Styrofoam.

Reference: https://content.ces.ncsu.edu/what-can-be-home-composted

Egg Cartons Compost