GUM on cloth seat ...help

I recently discovered that 1 of my passengers managed to get GUM stuck on the back seat......never gonna let that bastard back in my car again ever.

Anyway....I noticed it about a week later and it was hardened so managed to pry most of it off but there is still a bit remaining that is visible.

How can I get it off, I have cloth seats, are there any products available?

Thanks in advance.

Rub an icecube on what's still there to freeze it and you should be able to get most of it.  For the rest, warm vinegar and a toothbrush might work.