That Great Stuff really is awesome and once it's dry it isn't going anywhere I promise! We used it to fill in some holes that the cable guy had left going from outside into my basement. That was 4 years ago and it's still there. Another testament to it.....
My daughter is the absolute worst at not putting her dirty clothes in the hamper. They just get strewn across the floor. Well, every week I was picking up her clothes and it looked like she was taking scissors to her t shirts. This didn't suprise me because my daughter adores cutting stuff up. For weeks I was on her butt about it. Went up there again only to find a very tiny whole in her wood floor and a mouse trying to fit one of her shirts into this tiny hole. Obviously, the shirt wouldn't fit in but he sure did shred it in the process! I had to eat humble pie and apologize to her and then we filled that hole with Great Stuff and it's still there and no more shredded clothing!