Thick Carpet Glue Stains

Does anyone know where I can get a real good cleaning solution to clean thick hard glue stain?

I am stripping off the entire interior carpet of a Barracuda, and the floor pan under the ugly carpet has this hard glue stains everywhere... the plan is to clean the floor pan and rustproofing the entire space that is rusty. I really want to spray the glue stains with something, and perhaps let it sit for a while and then wipe it right off... is there such a strong product for me to use?

Anyone??? :scratch: