Stitch Witchery

[jamiejeans]

I came across this stuff tonight at AC Moore and thought what a great idea! (I somehow vaguely remember my mother using this stuff when I was about 5. On what, I don't remember). Anyhow, I bought some thinking it would be an easy way to line my bag (the July challenge that I am still working on). Has anyone used this stuff to line bags? Does it work? Is it safe on felted wool?