Firestop sealant is able to keep all gases and smoke from passing through walls, ceilings or floors that have been breached by a flame which means it can also be used in areas where open flames are present at any time during operation such as outside on your barbecue grill for example- so long as there isn’t an opening between where you live and what you use it with! This product works best when applied along seams including doorknobs, joints around baseboards and electrical outlets plus additional fixtures like pipes because these locations will always pose a higher risk than others due to increased levels of activity going on.