What is the effect of oven cleaner on kitchen counterstops?

Oven cleaner can be highly corrosive and damaging to kitchen countertops, particularly those made of porous materials like granite, marble, or laminate. The harsh chemicals can lead to discoloration, dulling, or even etching of the surface. It's essential to use cleaners specifically designed for the countertop material to avoid these adverse effects. Always follow the manufacturer's guidelines and perform a patch test when trying new cleaning products.