I think by "grass on" treatments you mean Graston... probably an auto correct issue. Am I right? I've had Graston treatments.
What I have found to be more effective is Active Release Techniques. You can find a provider - whichbwill be a chiropractor, same as Graston - via the A.R.T. website. There, the various providors are listed along with their certifications (A.R.T. has their own cert program). This is EXTREMELY EFFECTIVE at breaking up scar tissue and restoring range of motion.
There are at least 2 ART chiros I know who are heavily involved with MMA fighters. One is in Vegas, Jon Petrick; the other guy I know is in NJ, Mike Gearinger. Mike avtually travels with a well known MMA fighter from NJ when he's on the road for fights. I went to Petrick when I lived in Vegas amd go to Gearinger now that I'm back in NJ.
You have to find someone who's good at it and who will spend the time to "dig deep". It isn't always comfy..... And I've had some guys who go tjrough the motions without really working at it. That may work on someone without much muscle mass... If you try it, you'll know immediately if the guy (or gal, but for people like us it's unlikely a woman would have the strength in her hands to be effective) knows what he's doing or not. The effect is immediate. It may take some repetition for it to last, but if done right Ibfeel better immediately.