I've had good luck going to a local board shop and them just giving me a stick of p-tex. For cleaner I use goo-gone, because of it's citrus base.
For a scraper, just use either a metal scraper or a plexiglass one. I plan on going to home-depot and asking if they have any spare pieces of thin plexiglass. Once it gets dull just take some sand paper to it.
They use a brush for further cleaning, i'm sure you can find something similar at walmart or around the house.
Make sure you use the blue part of the flame, I made the mistake of using the white part to catch the p-tex on fire and the base part I was fixing turned black. Pretty sick battle scar...