How can I prevent mold in grout?

Drying it right after use (squeegee) is a good start. Is your grout sealed? If mold is there, you may need to remove that grout, re-grout, then seal it. Should re-seal every couple of years.

If your bathroom has an exhaust fan, use it. That is what they are there for. If you have a window to the outside, open it up, or at least leave it a crack open. And as Lea suggested, seal the grout. If you have no idea - err on the side of caution and do it. Can be a stinky process, have the kids and pets out of the house. You have far better things to do with your life and time than scrubbing grout! 😊

spray with a 50/50 solution of white vinegar and water. Let dry!!!

I believe there are mold-retardant sprays on the market...perhaps ask at a hardware store? I also know that some grout comes with a mold retardant.

I'm going to do all of this! Thanks everyone!

Car wax! Clean your shower thoroughly and let it dry completely, then apply liquid car wax. Give the shower stall a nice even coat, allow to dry completely before using. If you have glass shower doors you can use it on the inside of the doors too! Never wax over a shower or glass that isn't completely clean.

Never use bleach. It causes the mold to grow. Once cleaned you can keep a spray bottle of vinegar in the shower and spray it on the grout to keep the mold from growing.

mix 1/4 C bleach & 3/4 C water in spray bottle & spray affected areas after every shower. No rinsing required.

Thanks everyone!!

Clean with vinegar and let dry thoroughly. Seal with grout sealer.