Plywood is typically made from pine products (and glue) that really can be bad for your fireplace. The tar builds up and can lead to what is called a "flue" fire. Flue fires have been responsible for starting fires and burning homes.
Yes, but it makes a lot of sparks, have a firescreen in place.
Cedar is a great wood to burn if you want to repel bugs. I wouldn't stop with wood though, there are a number of plants you can burn as well. Some plants to try are citronella, lemongrass, rosemary, and thyme.
I do.
Yes
Check with Martin for an owner's manual. Unless a fireplace is specifically rated as multi-fuel, a gas fireplace cannot safely burn wood.
No, it is not safe to burn. It is toxic.
Sure can. Tends to burn hot, and pretty fast. Would suggest burning cedar as a mix with other woods for best results. In an open fireplace, it will crackle and pop alot. So care needs to be taken. As always, make sure its good and dry. Good starter wood.
Yes.
No. It's illegal.
yes
yes
Its wood isn't it
Yes.