Diane...They have scrapers with long handles that will help and a spray to loosen but I can't think of the name Sorry but it will be at hardware store where you get the scraper if you have to buy one,
if it’s a lot, (like ripped-up AstroTurf) then it’s going to be a miserable job, from my experience.
I ended up using porch/deck paint on it, in 2 colors & a faux sponge roller cover.
Soften the glue with a blow dryer and a lot of scraping and newspaper to wipe on.
We just did this project a few months ago. It was not fun. We purchased a long scraper from Ace Hardware so at least we didn't have to get on our knees. It was just a matter of elbow grease. We didn't have to do a real great job since we were putting down laminate. The glue was actually brittle so we didn't have to use anything to soften it. Good Luck!
Daughter ripped off her porch carpet. We scraped off what we could. Tiler put tiles right over the residual.