You can use a spot remover, but it might be better for the carpet, kids, and pets if you use a carpet steam cleaner that uses hot water. This will melt the glue and remove it easily.
That depends what kind of glue it is. -I would try Goof -Off for removing unknown glue from a carpet.
Difficult to say without knowing what exactly it is.-Name your glue -
You could use duct tape to put it together, or hot glue it.
Dip a rag in Goof Off and rub it on the carpet glue, it will soften enough to peel it off.
Depends on WHAT you are removing it from - partial facts are useless for an answer.
Explain what you mean by 'sustainable' -Obviously it will keep carpet down for years.
If the carpet glue is dense enough to affect your tile cement then you should remove it by sanding. -If it's only sparse then it won't matter.
No, there is no carpet glue in cigarettes.
It is generally not a recommended procedure. The abrasion of carpet on carpet will cause both layers to wear prematurely. Certain types of glue down carpet can be installed over existing glue down carpet. Check the manufactures installation instructions. I do agree that installing stretch in carpet over existing stretch in carpet is not a good idea.
No, it will not work. Go to store and get a proper carpet glue.
Once the wood dries & you can do it right.