probably too much oil in it. i know other small animals cannot have cedar around them. like hamsters or rodents because of the oils and dust is bad for their respiratory system. I would think it would just be best to stear clear of it and use pine or fir even red wood would be better that cedar i would think.

Here is a link that might be useful: TheItalian Garden

Im interested in Bumble bee box can you assist me to buy them where can I get them this is my first time Im looking forward to be able to learn and keeping bees in my back yard I really appreciated