Turn off power to any outlets or switches in the backsplash area
Remove outlet and switch cover plates
Protect countertops, cabinets, and nearby surfaces with drop cloths or cardboard
Score caulk and grout lines around the backsplash edges with a utility knife
Start at a loose edge, outlet opening, or damaged tile
Tap a putty knife or chisel behind the tile to lift it
Use a hammer and small pry bar or scraper to remove tiles one section at a time
Work slowly to avoid damaging the drywall or backer board
Remove remaining adhesive with a scraper, oscillating tool, or sanding block
Repair any damaged drywall or backer board
Clean the surface thoroughly before installing new tile or finishing the wall
Wear safety glasses, gloves, and a dust mask throughout the process