Welcome!
Here I have a green glass door. In which only some things can pass through and others can't

I will give you a thing or 2 that can go through the green glass door!
Your job is to figure out what the trick is on what can and cannot pass!
In order to find out you can ask if certain items can go through the green glass door, and I will tell you If it Can or if it Can't.

Please don't spoil it. If you already know then please help by telling people if things can or can not pass. If you think you figured out the answer, DO NOT POST IT! please PM the answer to me an I will tell you If you are correct or not. (then you will be added to the list

Just to start you off, here are some freebies:
Cheese can go through the green glass door
Bamboo can go through the green glass door
Cows Can't go through the green glass door

PEOPLE WHO GOT IT:
nobody yet