Cleaning the bathtub slip resistant bottom: OMG, it’s like new!

It’s like a miracle, but it’s embarrassing, too: After many years of housekeeping (ish), I finally learn how to clean the bathtub grungy anti-slip bottom — effectively. I recently completed a series of videos about my beige bathroom renovation, and when I did, I was so embarrassed by the state of the slip resistant bottom of my Kohler Dynametric tub. Yes, I am not the world’s most attentive house cleaner. But I swear, I really did (try to) clean this tub with some regularity. I only take showers, so it didn’t really bother me that it looked grungy. But finally, that icky video image sent me onto the internet to find a solution and to wrestle it to the ground. And by golly, I think I did.

Please note:
Disclaimer: Here on the blog, as homeowners ourselves, we may try new cleaning products aimed at solving our own cleaning problems; if we think we’ve found something promising to consider, we may write about it. But, we are not professional chemists or engineers or home economists. So, please: Do your own research into these products and their suitability for your projects before trying them. More info in Terms of Service.

My first logical go-to, since I have a circa-2004 model year Kohler Dynametric cast iron bathtub, was Kohler’s website section, Care and Cleaning for Cast Iron Tubs. Yup, there I found that Kohler recommends three companies with products to clean their SafeGuard Slip Resistant Surface: Clorox Disinfecting Bathroom Cleaner, Tilex Bathroom Cleaner and the mysterious-sounding “Express R.O.G.3 Tub and Tile Cleaner (Not sold commercially. Call 1-800-585-2325.)” Of course, I headed to ROG first — guessing they must have a specialized product.

Yup, seemingly so. Here is some of the text from the folks at R.O.G. of St. Cloud, Florida and their website:

I invented the type of dry etch slip guard which is used in the manufacturing of Kohler bathtubs today….

Slip resistant surfaces lose their effectiveness as dirt and oils fill the crevices. It is inevitable. The R.O.G. line of products are the only products able to do the job and clean where nothing else can….

The KOHLER company has approved the safeguard cleaner for all Kohler bathtubs, this safe chemical has been tested in great length to prove the safe guard restorer called ROG works without damaging the tubs surface.

Note: See what Kohler had to say about testing ROG products — and which they officially recommend — in this followup story — make your own decisions.

Oh my, they say the slip resistant surface loses effectiveness when it gets grungy. So, by getting it clean, it seems like I making it safer too. That’s good to know. {Do your own research.}

Update on the labeling:

Note, that in my subsequent use of ROG1 I saw that the label said it contained “Sulfonic Acid” — even though the owner of these ROG products says on their website, and has said on this blog in comments, that there is no acid in their products. So, I sent an email to ask about this discrepancy. Here is the exchange, and the company’s response:

I wrote to Vince Vallone, owner of the company:

This is Pam from Retro Renovation. I was just using ROG1 and noticed that an ingredient listed on the label is “Sulfonic Acid”. However, I don’t see this listed on the MSDS [link no longer available] <– linked here. And you said this as a comment, “Yes Gina the ROG products are not caustic, no acids, many folks don’t realize the the grocery store and walmart caries many acid contained cleaners and will dull the bathtub over years, magic eraser has acid, 409 scrubbing bubbles and many more.”
Can you clarify?
 Thank you, Pam
 Vince Vallone, owner of the company replied via email (this is edited slightly because I asked a followup and incorporated the answer here):
Hello Pam
Hope all is well and we appreciate your follow up.
 The ROG 1 cream contains no acids.
After your e-mail….
Well we researched this and found the mistake and figured out what went wrong with the labeling.
We many years ago manufactured a deck and hull cleaner similar to the ROG 1 but it was called BCD’s deck and hull cleaner product named ROG 9
The ROG 9 Deck and Hull cleaner for the yachting, and boating industry this product had the sulfonic acid in the proprietary mixture and our bottle printer who prints the data on the bottle left this acid statement on the ROG 1 label, by mistake we never caught it till you mentioned it. Thank you, your new name should be retro-thour-ough-. LOL.
The ROG 9 was an experimental cleaner we tried years ago the formulas was to clean exhaust fumes on the aft side of the boat from inboard engines exhaust marks from the diesel engines and worked great but it never took off as expected so we stopped production on this product. Both were created around the same time, as we also had Glass cleaner and deodorizers, we no longer make.
But leave it up to you with your great journalism to find this mistake. Again thank you, we have now taken steps to remove that error from all future ROG1 bottles.
Thank you for looking at our mistake and we have now taken steps to remove this on all the ROG 1 bottles


 These products are not cheap. But I was willing to take the chance. So I put $51 on the credit card, and my shipment arrived promptly.

This past Saturday afternoon, I began putting the products (again — see Kohler’s recommendations) to the test. And I have to say: I was ecstatic at the results. However, you know I gotta say: Do your own thorough research and make your own decisions… I have not used this product long term — just once, so far.


UPDATE on products NOT to use — as per Kohler:

products to avoid when cleaning porcelain

Update: I did a follow up story asking Kohler about various other products readers were saying they used — and how they do not specifically recommend ROG1 to clean the slip guard surface; they recommend the ROG3 — read this complete story here.

Wanna buy some? Here’s where to order ROG products. 

To clarify, I received no payment or anything to write this review; I discovered and paid for the product I tested myself.

Feb. 2015 update:

I am closing comments on this story because they are getting very repetitive.

Readers, do your own research and to cross-reference Kohler recommendations, which we profile here — https://retrorenovation.com/2012/11/19/kohler-says-no-to-magic-eraser-comet-bar-keepers-friend-zud-vinegar-for-cleaning-its-porcelain-enamel-cast-iron/

CategoriesShower Bases Tubs

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