I would highly recommend finding a qualified person that can perform dry needling.
Gray Cook does it and has said it’s one of the most powerful and efficient tools in his arsenal to reset tissue.
Just make sure you’re reinforcing the reset with good movement patterns to minimize the chances of the trigger points coming back.
If you can’t find a dry needler – I usually use a softball for that area. You’ll need the extra size above a lax ball to get into those deep and tough tissues.