I.use Tilex with bleach. Spray and let it soak for awhile. Rewet and scrub with a brush. For stubborn areas use Clorox Soft Scrub. Once clean and dry be sure to seal with a tile/grout sealer.
Next you need to address why you have mold. Make sure you have a working exhaust fan in bathroom.
Soft scrub witb a scruby works great
White cleaning vinegar will kill mold spores. Dilute if you need to. You might want to saturate cotton balls or paper towels and let sit.
Wet & forget shower is the best product I have ever found to clean and prevent build up in the shower. It is a no scrub product that cleans over time but my shower doors look brand new. It is the only thing that has been able to keep my non slip tub clean.
Hi Diana - This is the shower cleaner that we use to help keep grout and tiles clean and minimize the mildew - it works on kitchen grout too. Hope this helps! Hugs, Holly
PS - We have a FREE eBook with recipes for all of my homemade and all-natural cleaners. You can download it here --> https://pinkfortitude.com/thank#GreenClean
Thank you Holly