Make styrofoam bater easier to clean?

[joelstoner]

I have had this Styrofoam bater for a year, hatched 2-3 clutches in it, first few times it was decently easy to clean, but this last clutch was very dirty. Has anyone used a clear coat, or painted the bottom of their bater to make it easier to clean without damaging the Styrofoam? I was thinking of using Kilz water based, or some exterior water based glossy paint, then when the hatchings are messy it could be washed off real easily, then sanitized. What do you all think? It'll be a week before i put another clutch into it for a spring hatching.

 

[Baby Corn]

Maybe use Glad Press'n'Seal wrap? I don't know how it would do in 21 days of heat and humidity, but it's food safe, and it works great to line the bottom of birdcages!