If it's really dirty, you can use Lysol Lime & Rust Remover Toilet Bowl cleaner. In general, I clean my tile with this mixture:

1 cup baking soda

1 cup white cleaning vinegar

1 Tbsp blue Dawn

2 gallons hot water (I boil about 1/3 of mine)

Nancy

Here are some ideas

https://simplybeingmommy.com/2018/08/20/non-toxic-grout-cleaner/

https://www.apartmenttherapy.com/how-to-clean-grout-138432

You can make your own homemade grout cleaner! Mix together 1/2 cup of baking soda, 1/4 cup of hydrogen peroxide, and 1 tsp dish soap. Apply cleaning mixture onto grout, wait 5-10 minutes, scrub and rinse.

Hi Nancy, here are some sites that are sure to help. I've used the first one with great success! :)

https://experthometips.com/how-to-clean-grout

https://www.diydoctor.org.uk/projects/cleangrout.htm

https://www.hometalk.com/31413513/make-your-grout-look-like-new

Good luck

Make Your Grout Look Like New!

Heres are a few recommended cleaners. I hope this helps.

The Best Way to Clean Grout-EVER!!! | Hometalk

https://www.hometalk.com/2295735/the-best-way-to-clean-grout-ever?expand_all_questions=1

https://www.hometalk.com/41693881/homemade-grout-cleaner-recipe?expand_all_questions=1

https://www.bobvila.com/articles/cleaning-grout/#.Wi6YzKZOmf0

https://www.hometalk.com/search/posts?filter=clean%20grout

Additionally

Painted Tile Grout Refresh with grout pen

https://www.blesserhouse.com/painted-tile-grout-refresh/

Grout cleaning and grout removal and replace it

Here’s a Hometalk link for you to consider. Hope this helps

https://www.hometalk.com/23803774/how-to-clean-grout-and-install-new-grout-that-won-t-stain

The Best Way to Clean Grout-EVER!!!

Homemade Grout Cleaner Recipe

How to Clean Grout and Install New Grout That Won't Stain

Baking soda, and peroxide works really good. Also Dawn dish liquid.

Hi Nancy, we have used Norwex cleaning paste, and it works wonders. It's made from marble dust. I don't sell it, but I believe you can find it online.

Make a paste with bicard and water and cover the grout. It will need to sit for a while. Then scrub with a small brush. I found it very time consuming, I stick to bleach.

Start with vinegar and if it still needs more, make a paste with baking soda. Scrub with a small brush.

Make a paste of baking soda and peroxide then apply it to your grout with a toothbrush. Let it sit a little and then remove with a clean cloth.

Hi Nancy - 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. I've also included a great article about mold if it's gone that far. Hope this helps! Hugs, Holly

https://pinkfortitude.com/shower-cleaner-diy/

https://pinkfortitude.com/mold-in-the-shower/

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

This product works well for both tile and grout: https://amzn.to/34yOt0E

Hi Nancy, here are a few ideas for you, one is with homemade ingredients, hope they help you

https://www.youtube.com/watch?v=puN5iLUFnpc

What's the best homemade grout and tile cleaner? Mix together 1/2 cup of baking soda, 1/4 cup of hydrogen peroxide, and 1 tsp dish soap. Apply cleaning mixture onto grout, wait 5-10 minutes, scrub and rinse.

Whatever route you opt for, avoid using vinegar as it dissolves grout.