The answer to 'grout pet stains' is that pet urine and feces can cause unsightly and difficult-to-remove stains in grout. These stains are common in homes with pets, especially in high-traffic areas like kitchens, bathrooms, and entryways. The acidic nature of pet waste can break down the grout and cause discoloration over time.
To address grout pet stains, you can try DIY cleaning methods like scrubbing with a stiff brush and a solution of warm water and vinegar or baking soda. However, for deeply set or persistent stains, it's often best to call in a professional cleaning service. They have access to more powerful cleaning solutions and equipment that can effectively remove the stains without causing further damage to the grout.