Deep Cleaning Your Home: A Checklist That Works Like a Refactor

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Deep cleaning is a top-to-bottom clean of the spots your weekly routine skips: inside the oven and fridge, grout, baseboards, vents, and the gunk behind the furniture. Most pros say to do it every three to six months. Think of it as a refactor for your home. Your daily wipe-downs are small hotfixes. A deep clean pays down the debt they leave behind. That debt is real. Health Canada says Canadians spend about 90% of their time indoors. For anyone who codes from home, it's likely more. Below is the checklist we use at Ezi Home Services , set up the way you'd plan a sprint: scope, order, and a schedule. What is deep cleaning, and how is it different from regular cleaning? A regular clean keeps things tidy. You vacuum, wipe the counters, and scrub the toilet. A deep clean goes after build-up that takes months to form and hours to remove. Here's the split in plain terms: Regular clean: floors, counters, sinks, toilets, a quick dust. Deep clean: inside the oven and fridge, tile grout, baseboards, window sills and tracks, vents, light fixtures, and the walls near switches. If you want to see how a pro crew scopes the job, the deep cleaning service checklist from Ezi Home Services lists it room by room. It's a handy spec to copy, even if you plan to do it all yourself. Why your desk might be the dirtiest spot in your home Developers tend to guess the bathroom is the worst room. The data says otherwise. A well-known study by University of Arizona microbiologist Dr. Charles Gerba found about 3,295 germs per square inch on a work keyboard. The average toilet seat had about 49. Desks were worse still, since so many of us eat lunch at them. The kitchen is the other hot spot. In NSF International's household germ study, the dish sponge ranked as the germiest item in the home. The kitchen sink came second. The coffee maker's water tank made the top five, with yeast and mold found in half of the tanks tested. So if you run on coffee, that tank belongs on your list. The deep cleaning checklist, in the right order Order matters more than most people think. The rule is simple: top to bottom, dry to wet. Dust falls, so clean the high spots first. Dry dust before you mop, or you'll just smear it around. Work through the home in this order: Clear the decks. Put clutter away so every surface is open. You can't clean what you can't reach. High dust. Ceiling fans, light fixtures, vent covers, and the tops of shelves and door frames. Electronics and desk. Unplug first. Wipe the keyboard, mouse, monitor stand, phone, and cables with a damp cloth. Kitchen. Oven inside, fridge inside, range hood filter, cabinet fronts, and the coffee maker tank. Swap out the sponge. Bathroom. Grout, shower glass, the exhaust fan cover, and behind the toilet. Walls and trim. Spot-clean near switches and handles, then wipe the baseboards. Windows. Glass, sills, and the tracks, where grit loves to pile up. Floors last. Vacuum with a HEPA filter, then mop. After you dust, wait five to ten minutes before you vacuum. That gives the fine dust time to settle on the floor, where the vacuum can catch it. Why a damp cloth beats a feather duster Dust isn't just dirt. Health Canada's Canadian House Dust Study sampled over 1,000 homes in 13 cities, including Gatineau and Montreal. It found traces of flame retardants, plasticizers, and metals in the dust. Some metals were far more concentrated in indoor dust than in soil outside. Electronics are part of the story. A University of Toronto study of 51 Canadian homes found flame retardant traces on the surfaces of phones and tablets, and on people's hands. Those chemicals move from gear to dust to hands, and back again. The good news is that cleaning helps. A Columbia University study found that routine house cleaning and hand washing cut detectable exposure to these chemicals by about half in one to two weeks. The key is to trap the dust, not fling it into the air. Use a damp microfibre cloth , not a dry duster, and a vacuum with a true HEPA filter. The underused step: disinfectant "contact time" This is the step almost every deep cleaning guide skips, and it's the one that makes disinfecting work. Most people spray a disinfectant and wipe it off right away. But every disinfectant has a contact time . That's how long the surface must stay wet for the product to kill germs. Canadian public health units, such as Durham Region and Peel Region, point to it in their guides on how to read a label. Times range from one minute to ten minutes, and some go longer. Wipe it off early and you've mostly just cleaned, not disinfected. Two quick checks before you buy or use a product: Look for a DIN. In Canada, a disinfectant should have an 8-digit Drug Identification Number from Health Canada on the label. That means Health Canada reviewed its kill claims. Read the contact time. Then leave the surface wet for that long. If it dries early, spray again. Clean first, then disinfect. Grease and grime shield germs, so a disinfectant on a dirty counter won't do its job. Save it for the spots hands touch most: taps, handles, switches, the fridge door, and yes, your keyboard (sprayed onto a cloth, never onto the keys). How often should you deep clean? Most cleaning pros suggest a full deep clean every three to six months. Adjust that for your home: Pets: every two to three months. Young kids: about every three months. Allergies or asthma: every two to three months. Living alone, few guests: six months is often fine. A good trick is to tie it to the seasons. Many Canadians do one clean in spring and one in fall, right before the windows close for winter. Some teams at Ezi Home Services see the fall clean as the more useful of the two, since you're about to spend months indoors with that air. How we put this guide together The advice here draws on Health Canada's House Dust Study, its indoor air guidance, and its disinfectant rules. We also used label guides from Ontario public health units and NSF International's household germ study. The germ and dust data come from the University of Arizona, the University of Toronto, and Columbia University. Common questions about deep cleaning How long does a deep clean take? For a two-bedroom home, plan on four to eight hours for one person. Kitchens with a greasy oven or hood can add an hour or more. Should I deep clean or hire someone? If you have a free weekend and the energy, the checklist above covers it. If your time is worth more at the keyboard, a service like Ezi Home Services can handle the heavy parts, such as the oven, grout, and baseboards. Is vinegar a disinfectant? No. Vinegar is a fine cleaner for glass and mineral build-up. But it doesn't carry a DIN, so it isn't approved as a disinfectant in Canada. Do I need to move furniture? For a true deep clean, yes, at least the lighter pieces. Dust and pet hair pile up under beds and sofas, and your robot vacuum can't reach all of it. Final thoughts Deep cleaning works best when you treat it like any other planned job. Scope it, work top to bottom and dry to wet, and respect the contact time on your disinfectant. Do it every three to six months and the build-up never gets out of hand. If you're in Ottawa and would rather spend your weekend on a side project, you can book deep cleaning in Ottawa with Ezi Home Services and let a pro run the checklist for you.