Do you sterilize or disinfect first?

Clean First, Then Disinfect: The Right Way to Keep Surfaces Safe

When it comes to keeping your home or workspace germ-free, the order of operations matters. A common question pops up: should you sterilize or disinfect first? The answer is simpler than you might think—start with cleaning.

Cleaning comes first. This step removes dirt, dust, and visible grime using soap and water. While it doesn’t kill germs, it clears away the gunk that can block disinfectants from doing their job. Think of it this way: if you try to disinfect a greasy countertop, the disinfectant can’t reach the surface beneath the mess, making it far less effective.

Only after cleaning should you move on to disinfecting. This is where stronger solutions—like bleach diluted to the proper concentration or EPA-approved disinfectants—come into play. These products are designed to kill most bacteria, viruses, and fungi on hard surfaces. But for them to work properly, they need direct contact with the surface, which is why cleaning first is essential.

True sterilization—destroying all microorganisms—is usually reserved for medical or lab settings and isn’t practical or necessary in everyday environments. For homes and offices, thorough cleaning followed by proper disinfection is more than enough to maintain a healthy space.

So remember: clean, then disinfect. It’s not just a routine—it’s the most effective way to keep your surroundings truly clean. Whether you're wiping down kitchen counters or sanitizing doorknobs, taking the steps in order ensures real results. And in a world where hygiene matters more than ever, doing it right matters just as much as doing it often.