YES–keep the grooves clean and buy new irons and wedges when the grooves get pretty well worn. A lot of folks think grooves grab and spin the ball. WRONG! The grooves are the like the tread on your tires. That tread channels water away from the tire so there’s more tire surface touching the road–giving you better traction. Grooves do the same thing. They shear the grass and other debris off, that material gets into the groove and allows more surface of the iron face to interact with the ball.
Clean grooves and deep grooves are essential to being able to control the ball especially out of the rough.