Removing mold from shower tiles

"Thick bleach" is sufficient, IMO.

Thomas Prufer

Dettol Mould and Mildew trigger pack.

Pungent odour, can attack metal fittings, clears mould & mildew a treat.

Apply carefully, don't get in eyes, or on clothes of fabric.

Bleach will do it but the problem is that you need it to remain in contact with the grout long enough to work (a hour) - a quick wipe over will not work. You need to make the bleach thicker/stickier so it sticks to the grout rather than just runs off. Possibly the baking soda aids making the bleach thicker.

Where I have performed this task in the past I've used a paint brush to apply the thickened bleach and a toothbrush later in the process to get to the stubborn bits. Wear old clothes - you will bet spots of bleach on them :(

I use 'daily shower shine' to control the very little lime deposits left with a water softener, and there are spray on bleaches also . What I have found with all build ups of unwanted material is that the secret is to use the product/technique regularly to abrade the problem and keep it at bay. One application is never enough,

Coat with cling film after applying bleach, especially at corners etc.

By coincidence, I have just found a "system" online: a lengthwise rope of cotton on a strip of tape. Apply one side of tape, soak cotton in bleach, apply other side of tape. Let sit... remove eventually.

Thomas Prufer