No “larger” glass containers, such as beer bottles etc is allowed.
Smaller glass items such as perfume bottles, make-up mirrors etc is allowed.
Why do we forbid this? – Easy!
In grass or on gravel, pieces of glass can be very hard to find when we clean up.
And a pice of glass can be very dangerous to fall on. All of you have cut your self on glass sometimes, and you know how stupid that feels with all that blood all over you?
– Did you know that one little pice from a smashed glass bottle can kill large wild animals like elks and deers if they eat pieces of it?