No, the Fire Glass is manufactured for fireplace and fire pit use. It will not spark or pop or explode. Cheap recycled glass from our competitors can have air bubbles in the glass which will explode and send pieces of sharp glass flying causing a real hazard for friends and family. Our glass is manufactured exclusively for Fire Glass and will not pop explode or crack from heat. Doors are recommended if you have children or pets around since the broken pieces of glass can be a choking hazard even though they are not sharp. Even though we recommend doors to keep pets out, it has been our experience that pets don’t mess with the glass.