Tech Tuesday: Acid Cleaners and How to Use Them

We all know which cleaners work and which cleaners don't work but we don't always know we why. We often learn through trial and error. Understanding the science will help us understand if a new cleaner will deliver on its promises without risking damage to a customer's home. Also the ability to explain why a product works separates us from our competition by showing that we are true professionals with training and knowledge. In fact the topic of today's article, acids and how to use them, was the reason I won a large contract as the sole cleaning contractor for an apartment complex with over 450 units.

Most people understand what an acid is even if they don't understand the technical definition. However understanding the pH scale is important because it tells you how strong an acid is. The pH scale goes from 0 to 14. Any chemical that has a pH less than 7 (when dissolved in water) is an acid. The lower the pH number, the stronger the acid. The pH scale is logarithmic which is a fancy way of saying each point on the pH scale means the acid is 10 times stronger than the next number on the scale. So a cleaner with a pH of 1 is not slightly more strong than a cleaner with a pH of 2, it is 10 times stronger.

Acids are very useful in cleaning, especially in bathrooms. Soap scum has many things in it but in most cases it is calcium or limestone which is dissolved in tap water. As the water dries on the bath walls it leaves behind a small amount of limestone and calcium which builds up over time. Soap scum is not soap at all, in most cases it is a layer of stone made up of these two ingredients on the bathroom surfaces. This is why it is so hard to remove with normal cleaners. It is like trying to clean a rock and wondering why it is still a looks like a rock after you scrub it. The only really effective way to remove soap scum is to use an acid. Acid will dissolve the soap scum into liquid or a gas. Think of your elementary school volcanoes. Vinegar is an acid (pH 3) and when mixed with baking soda the baking soda is dissolved and/or turned to a gas. Acids do the same thing to soap scum. This is also why you need to leave soap scum remover on the surface for a while before you remove it. You need to give the acid time to work. This is also why most toilet bowl cleaner are acids. Acids remove those hard water rings and rust, although rust is whole other discussion.

While acids do a great job removing soap scum they also can do damage to some natural stone and metals like chrome. Most bathroom fixtures are chrome plated because chrome is a very durable and water resistant product. However chrome has one very serious weakness, acid. Acid will eat the chrome plating. The stronger the acid and the cheaper (thinner) the chrome plated fixture, the faster this damage will occur. It is very important that you understand the pH level of your cleaner because they all say they remove soap scum but the lower the pH the better the job it will do removing the soap scum but also the more likely the product will damage chrome. All bathroom cleaners make claims like “powers through soap scum” but these claims don't really tell you anything. The pH of the product does not lie. The best way to learn the pH of any product is to go online and get the MSDS sheet which will tell you the pH of the product. Below are a few examples of common cleaners used by residential cleaners and their pH:

Comet Bathroom Cleaner – pH 3.0 (active ingredient citric acid)

Lime Away - pH 2.0 (active ingredient phosphoric acid)

Works Toilet Bowl Cleaner – pH less than 1.0 (active ingredient hydrochloric acid)

Remember the pH scale works on factor of 10 so Lime Away is 10 times stronger than Comet Bathroom Cleaner and Works Toilet Bowl Cleaner is 100 times stronger than Comet Bathroom Cleaner. If you have ever cleaned a really nasty bathroom with years of soap scum you have probably used a toilet bowl cleaner on it and seen how it eats the scum right off in seconds. If you got the cleaner on the chrome you also probably bought your client some new fixtures.

So back to my story from the beginning. I was called to bid on cleaning apartments and common areas for a complex with over 450 units. The previous company had been doing a great job cleaning the units but they kept damaging the chrome in the kitchen and bathroom. The owner of the service kept trying different cleaners but she kept having the same problem. When they told me this I explained the reason why this was happening was because the complex was using very cheap fixtures with super thin chrome plating. As a result even very low acid cleaners (like Lime Away and CLR) that were safe in 99.9% of residences would damage their chrome. The solution was to either buy a better fixture (no chance) or to make sure we only used cleaners with a pH higher than 3 on chrome. When I explained this to them I won the contract right then and there. They had been spending thousands of dollars on new chrome fixtures and sinks. I was able to explain to them not only how I could fix the problem but I also helped them make a list of cleaners which they could give to the residents to use. This separated us from all the other bidders (that had no idea what went wrong) and the owner of the previous company that by all accounts did a great job and tried every cleaner in the grocery store but could not make the client happy.

My company - background

I have realized by some of the questions sent to me that I may need to give you some background on my company, or rather companies. I spent 12 years at Procter & Gamble so I am a strong believer in different brands with different management for different customers. At P&G many brands like Tide, Cheer, Gain, and Deft are all owned by the same company but each brand has a team assigned to it and they are rewarded for the results of their brands. I have sort of done the same thing here.

My Maid Service is my biggest company and the parent company. Back to my P&G example, this is my Tide. My Maid Service has been in business for 14 years but I bought it in November 2007 so we are going on 4.5 years now. My Maid Service is 100% owned by my brother and I and we are not a franchise. We have tripled the company in the last 4 years. http://www.mymaidservice.net/ is the Cincinnati website. 3 years ago my brother, Shawn, opened My Maid Service Dallas. His office is now almost as large as the Cincinnati office and he will probably pass us this year in terms of revenue from maid service clients (he has no commercial division yet). http://www.mymaidservice.com/ is the Dallas website. Both offices use solo cleaners, paid on commission, driving their personal vehicles. I have a General Manager in charge of My Maid Service Cincinnati named Rachel. Shawn runs the Dallas himself.

ACS Cleaning Services is my commercial cleaning company and it only operates in Cincinnati right now. I also bought ACS but less than 2 years ago and we have grown the business to be 4 times larger than when we bought it. David is the General Manager for ACS Cleaning Services. ACS is not as high margin as My Maid Service but it is the fastest growing part right now. Back to my P&G Example, ACS Cleaning is my Gain. http://www.acscleaningcinci.com/ It is going to be an interesting year for ACS. In Commercial Cleaning you kind of work your way up the food chain from smaller accounts to mid teir and then finally the big ones.  In the last 2 months we have been invited to big on two very large projects.  I am both excited and terrified to win these.

I will be launching a new company in June to do chemical free cleaning. Carole is the general manager for this company and she is doing all the work to launch it and she is running some test teams to work out the systems and to test the marketing and pricing. This will be a premium priced company. We expect it to be smaller than My Maid Service but with better margins. This company will use company cars, teams, and the employees will be paid hourly. In my P&G example, this is my Dreft. A smaller brand that will never be huge but can earn very nice margins.

I meet with all my general managers once a week to talk about their key measures, progress on projects, and where they may need help.

Finally I am a partner with 3 other cleaning service owners of the Institute for Service Excellence. This is a school for other cleaning companies and it is the first school certified by the Clean Trust to teach the new Home Cleaning Technician program. This school will be the topic of other articles in the future but I want to be up front that I own part of it since most of what I will be doing and writing on next week will be related to the school. The website for the school is http://www.isetoday.com/ There is no P&G example for this one.