Make sure you have a 30 oz caulk gun for this sealant. The Sealant goes on sticky and dries to a consistency that resembles the adhesive found on mailers with closed flaps. Once it is dry you can peal it off with your hand and it sticks together in clumps. It is loose and pliable even when dry which is what gives it the acoustical benefit when used for soundproofing. I have used it to seal cracks in drywall, along gaps in framing, and even along a noisy HVAC duct and found that it significantly reduced vibration after it had dried. Sealing around a large room took multiple tubes. I was initially concerned about odors form the glue but the smell quickly faded once the caulk dried.Sound reduction requires multiple tactics to be truly effective so make sure you are including this as part of your plan and not as the entire solution. The caulk worked well in my room but I also used putty pads around outlets, offset spacing for drywall seams, rockwool insulation, resilient channel, and acoustic drywall. Follow the instructions and you should see significant improvement. Leaving an open air gap is a huge problem between rooms and Green Glue sealant did a nice job filling them.