More bleach, quick wipes, mixed sprays: the cleaning mistakes that undo the work

Cleaning and disinfecting are two different jobs

The most common mistakes at home are disinfecting a surface without cleaning it first, wiping a disinfectant off before it has had time to work, mixing products to make them stronger, using more bleach than the directions call for, and spreading dirt around with the same dirty cloth. Almost all of them come from treating cleaning and disinfecting as one job. Cleaning removes dirt and most germs with soap or detergent, water and scrubbing; disinfecting uses a product to kill germs that remain, and it only works on a surface that is already clean.

I own Texas Kings Cleaning Services in Garland, and these are the habits I see in homes again and again, usually from people working hard to keep their family healthy. Here are the myths behind them, what the CDC and EPA actually say, and the simple fixes.

Myth: a disinfecting spray cleans the surface too

A counter with crumbs, grease or a sticky spill is not ready for disinfectant. The CDC advises cleaning first, with soap or detergent and water, and then sanitizing or disinfecting if needed, because dirt on a surface can keep the disinfecting chemical from reaching the germs. The EPA's steps for disinfectant use say the same thing: wash the surface with soap and water if the directions mention pre-cleaning or if it is visibly dirty.

In practice, that means two passes on a dirty surface, not one. Clean it, rinse if the cleaner leaves residue, then apply the disinfectant. On a surface that only looked dirty to begin with, the cleaning step may be all you needed.

A related myth is that a strong smell means a clean surface. The scent of bleach or a fragrance only tells you a product was used. It says nothing about whether the dirt came off or whether the product stayed on long enough to work, and a heavily scented room is often a sign that more product was used than needed.

Myth: spray, wipe, done

This is the mistake I see most. Someone sprays a disinfectant and wipes it off in the same motion. Every disinfectant has a contact time on its label, the period the surface has to stay wet for the product to kill the germs it lists. The EPA says the surface should remain visibly wet for the entire contact time, and if it dries early, more product needs to be applied. For a bleach solution without label directions, the CDC suggests leaving it on for at least one minute.

Contact times differ from product to product and from germ to germ, so read the label rather than guessing. If a product's contact time is several minutes, a quick wipe is cleaning, not disinfecting.

Disinfecting wipes follow the same rule. They are convenient, but the surface still has to stay wet for the time on the package, which often means using more than one wipe on a large counter. A wipe that has dried out in its container, or that has already been used on three other surfaces, is not disinfecting much of anything.

Myth: mixing two cleaners makes a stronger one

Never mix cleaning products. The CDC warns against mixing household bleach with any other cleaners or disinfectants because it can release dangerous vapors, and its general guidance for home cleaning is simply not to mix products or chemicals. Bleach and ammonia is the combination people have heard about, but bleach with acidic cleaners, such as some toilet bowl and lime-scale products, is also a problem. Even pouring one product into a toilet that still has another in it counts as mixing.

Use one product at a time, rinse between products if you are switching, and open windows or run a fan for ventilation, as the CDC recommends when cleaning indoors.

Small rooms make this worse. A closed bathroom with no window is where fumes from a single strong product can become uncomfortable quickly. Run the exhaust fan, keep the door open and wear gloves or eye protection when the label calls for them.

Myth: more bleach works better

Undiluted or extra-strong bleach does not clean better. It is harder on surfaces, on lungs and on skin, and a solution that is too strong or too old is not what the guidance is built around. The CDC recommends using regular, unscented household bleach that contains 5 to 9 percent sodium hypochlorite, following the label directions, and, where the label has no mixing directions, a dilution of 1/3 cup of bleach per gallon of room-temperature water. It also says to make a fresh solution daily, because a diluted solution loses effectiveness after 24 hours.

Bleach is also not the right choice for every surface. It can damage some stone, metal and fabric, and the CDC says splashless bleach and some laundry bleaches are not the right products for disinfecting. When in doubt, use a product made for the surface and follow its label.

Myth: everything needs disinfecting, all the time

Disinfecting the entire house every day feels responsible, but it is usually not necessary. The CDC says disinfecting at home is likely not needed unless someone in the home is sick or someone at higher risk of getting sick lives there. For most homes, regular cleaning of high-touch surfaces such as light switches, doorknobs and countertops, and cleaning other surfaces when they are visibly dirty, does the job.

There is also a cost to overdoing it. The CDC notes that some cleaning and disinfecting products can trigger asthma. Save disinfecting for when there is a reason: after a stomach bug or flu has gone through the house, or in a bathroom someone sick has been using.

It is common to find a Dallas-area home where every surface gets disinfected daily while the stovetop and the shower quietly build up. Regular cleaning first, targeted disinfecting when there is a reason, is the better trade.

Tool mistakes that spread dirt instead of removing it

A cloth that wiped the toilet should not touch the kitchen counter, and a cloth that is already dirty mostly moves dirt from one place to another. Dry dusting lifts dust into the air to settle again a few minutes later. A vacuum with a full bag or a clogged filter loses suction and can blow fine dust back out.

The fixes are inexpensive and they make a big difference.

Mop water is another quiet culprit. Once it turns gray, the mop is spreading a thin layer of dirty water across the floor, which dries into a dull film. Change the water as soon as it looks dirty, and rinse the mop head well after each use.

• Use separate cloths, by color, for kitchens, bathrooms and toilets
• Swap to a fresh cloth often, and wash cloths after each cleaning
• Dust with a slightly damp microfiber cloth, not a dry one
• Work top to bottom so dust falls onto surfaces not yet cleaned
• Empty the vacuum and clean or change its filter regularly
• Replace sponges often, or skip them for washable cloths

Crumbs, clutter and the pests they invite

Some cleaning mistakes do not show up until something else moves in. Crumbs along the edge of the stove, under the toaster and in the toe kick under the cabinets, a pet bowl left full overnight, or a trash can that has not been washed in months are exactly what ants and roaches look for. Wiping the visible counter while those places build up is a common reason a clean-looking kitchen still has a pest problem.

Good cleaning is one half of keeping pests out; the other half is treating them carefully, especially with small children and pets in the house. A pest control specialist explains that side in pest control when you cannot just spray.

The label is the instruction manual

Most product mistakes would disappear if people read the label once. The EPA's advice is to check the use sites and surface types to see where a product can be used, read the precautionary statements, follow the contact time, wear gloves if directed and wash your hands afterward, and keep lids tightly closed and products out of reach of children. For disinfectants, the EPA says the registration number on the label is the only accurate way to identify a product.

I use products approved by the US EPA for use against SARS-CoV-2 on non-porous surfaces, and I follow their labels on surfaces and contact times. The same discipline works at home, whatever products you choose.

Using the right product on the wrong surface is its own mistake. Acidic cleaners can etch natural stone, abrasive powders scratch glass shower doors and some finishes, and harsh products can dull new fixtures. If you have stone counters, specialty floors or new fixtures, check the manufacturer's care instructions before you choose a cleaner.

Doing it right without doubling the work

Good cleaning is not about stronger products or more time. It is about order, the right tool and letting a product do its job. If you want to keep the house in shape between professional visits, the habits in keeping the house clean between professional cleanings are simple and build on everything above.

If you are hiring help, ask the company how they handle cleaning versus disinfecting, contact time and products in your home; the full list of questions is in what to ask a cleaning company before hiring. I serve Garland, Mesquite, Richardson, Rowlett and the Dallas area, and I am glad to explain how I clean any home before the first visit.

Questions people ask me