Cleaning your tiles with a bleach-based product may seem like a good solution to get rid of the ‘gunk’ growing in your shower, but it may have the exact opposite effect. Bleach-based products sold by many manufacturers as “mildew solutions or preventives” can actually open the pores of the grout between your tiles and encourage the growth of even more bacteria.
This could cause your cementitious grout to deteriorate, and it can make your grout more susceptible to bacteria growth, meaning you’ll be cleaning it even more often. This works well for manufacturers of off-the-shelf, bleach-based products, but it’s causing more work for you, costing you extra money, and releasing more chemicals into your environment.
Save yourself a lot of work and give your grout (and your lungs) a break — clean tile and grout ONLY with pH-Neutral cleaners and a stiff-bristle brush. (pH-Neutral cleaners are neither acidic nor alkaline.) Routine squeegeeing of your tile will also help in making it stay cleaner longer. Remember, you chose tile because it was easy to maintain so don’t make extra work for yourself.