Customer Rating: - A different use
I use this product every year in my classroom. My laminated posters stay up all school year. (In a room with painted cinder block walls and a wide range of temperatures.) Then I can easily remove the posters and store them over the summer, no sticky stuff left on the back.

It does smell some while putting them up, but opening the door and a window helps. By the next day the smell is gone.

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Customer Rating: - Seals great, but fumes are horrible
The only reason I did not give this product a 1 star is because the product does actually seal windows wonderfully, but the fumes are horrible. Even 12 hours after application fumes are still present. Any savings by sealing your windows will be lost by the amount of time your unsealed doors/windows need to be open to let out the fumes. If you think about it the product's instructions present a perfect oxy moron. You need to apply in a well ventilated area yet you are sealing the very windows that would allow for ventilation. It seems that the manufacturer could have developed the product a little further to eliminate the fumes and thus the need to open up your whole house for hours to get rid of them. I recommend using another product or method to seal your windows.

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Customer Rating: - Buy it. Great.
I have a big one-bedroom apartment with TEN French doors on the outside (five balconies) of this 1915 building, and no central heating (in cold Washington DC) but in-wall units. People have spoken of my place as "The Meat Locker" it has been so cold in winter, but the difference is amazing (I just checked and it is 15 degrees out and 70 degrees inside with not much heat cranking). The clear "caulk" is absolutely invisible. I am stocking up in case they go out of business.

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Customer Rating: - This stuff works great!
Seals like a champ. Although, trying to get in a well ventilated area while you are trying to seal everything is a bit hard. And believe me, you NEED to be in a well ventilated area!