Scrape off loose paint with a putty knife or paint scraper
Sweep or vacuum the area
Apply a paint stripper made for concrete
Let the stripper sit for the recommended time
Scrub the paint with a stiff-bristle brush
Rinse the area with water
Use a pressure washer for stubborn residue
Repeat the stripper and scrubbing process if needed
Use a wire brush for small remaining spots
Sandblast or grind the surface for very tough paint
Wear gloves, eye protection, and a mask
Test any chemical on a small hidden area first