I pull the plastic, but leave the lid on ... the boxes I use aren't air tight.
Hope this helps.
-adam
Click Below to Fight The National Python & Boa Ban
"The world is a dangerous place, not because of those who do evil, but because of those who look on and do nothing."
- Anna Sewell, author of Black Beauty
We're using a closet for an incubator next year, but this year we used a couple of Hovabators. Due to the size of the incubators, we had the vermiculite right in the bottom, and didn't use seperate containers (they wouldn't fit).
I don't think I'll be doing that again, we had a heck of a time retrieving one of the hatchlings that decided to crawl up into the wafer thermostat. lol