A clay bar would probably work. Really depends on the seriousness of the overspray.. if it's only a few weeks old, baka kaya pa mga OTC clay bars. But if some time has passed na, you'd need a more "aggressive" claybar.
For me, Mother's Clay Bar (probably the only clay bar easily obtainable in the market) worked for my overspray. I had overspray all over the car... and right now, only the front bumper needs some claying. I kinda missed it during my claying session. Still, it's a good investment if you're into detailing. I suggest diluting the Mother's Showtime cleaning QD with some distilled water para massulit
