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A lot of home maintenance advice gets handed down the same way family recipes do. Someone swears by it, their parents did it that way, and before long, it becomes a “rule.” The problem? Some of those rules aren’t based on facts, just repetition.

And when it comes to your house, following the wrong advice can cost you time, money, and sometimes even cause damage. If you’ve been doing any of these for years, don’t feel bad. Plenty of homeowners have. Let’s clear up what’s actually true and what isn’t.

woman fixing sink pipe — Image Credit: Deposit Photos

You Should Only Clean Your Gutters Once a Year

Cleaning your gutter once a year sounds reasonable until you factor in trees, storms, and heavy seasonal debris.

If you have overhanging branches or live in a windy area, once a year often isn’t enough. Clogged gutters can lead to overflowing water, roof damage, and even foundation problems.

Most professionals recommend cleaning gutters at least twice a year and sometimes more if your home is surrounded by trees.

Duct Cleaning Dramatically Improves Air Quality

It feels logical: clean the ducts, get cleaner air. But that’s not always how it works.

According to the EPA, routine duct cleaning doesn’t significantly improve indoor air quality unless there’s visible mold, pest infestation, or major debris buildup. In most homes, regularly changing HVAC filters and maintaining proper ventilation do far more for your air quality than any other single measure.

Duct cleaning isn’t useless; it’s just not the miracle fix it’s often marketed as.

Bleach Kills All Mold

Bleach works on hard, non-porous surfaces like tile or glass. But on porous materials like drywall or wood? Not so much.

Bleach can clean the surface, but it doesn’t penetrate deeply enough to eliminate mold roots. In some cases, it can even leave moisture behind, allowing mold to return.

For serious mold issues, especially on porous materials, specialized mold treatments are a better option.

6 Effective Ways to Clean Mold from Shower Caulk and Grout

Any Foundation Crack Is a Disaster

Few things scare homeowners more than spotting a crack in the foundation. But not every crack means structural failure.

Hairline cracks are common as homes settle over time. Structural engineers generally consider cracks under ¼ inch that aren’t expanding to be normal settling.

The red flags? Cracks that are widening, uneven, or allowing water in. Those are worth a professional look.

Painting a Wooden Deck Makes It Maintenance-Free

Paint or sealant protects your deck, but not forever. Sun exposure, moisture, and temperature swings slowly break down finishes. Even high-quality sealants typically need reapplication every couple of years.

Think of deck protection like sunscreen. It works, but only if you reapply it.

“Flushable” Wipes Are Safe for Your Plumbing

The label says flushable. Your pipes disagree. Unlike toilet paper, many wipes don’t break down quickly. They can clog pipes and strain septic systems, leading to expensive plumbing repairs.

If you want to avoid plumber bills, stick to toilet paper even if the marketing says otherwise.

18 Easy Projects Made from Toilet Paper Rolls

Running Water While Using the Garbage Disposal Prevents Clogs

Running water helps, but it’s not a magic shield. Grease, coffee grounds, eggshells, and fibrous vegetables can still clog pipes even when water is running. The safest move is simple: don’t put problem items down the disposal at all.

Water supports the system. It doesn’t fix bad habits.

18 Things You Should Never Put Down the Garbage Disposal

Duct Tape Fixes Everything

Duct tape is helpful. It’s handy. It’s not permanent. Duct tape is great for temporary fixes, but its adhesive breaks down over time, especially under heat, moisture, or pressure. Using it as a long-term solution often leads to bigger repairs later.

Think of duct tape as a short-term patch, not a permanent repair plan.

Turning Electronics “Off” Completely Stops Energy Use

Modern electronics rarely power down fully unless unplugged.

Many devices draw standby power, also known as “phantom energy.” Over time, that idle energy use adds up. The U.S. Department of Energy estimates standby power can account for around 10% of household electricity use.

Smart power strips or unplugging rarely used devices make a bigger difference than simply hitting the power button.

Vinegar Cleans Absolutely Everything

Vinegar is powerful, but it’s not universal. Its acidity can damage natural stone surfaces like granite and marble, and it can dull hardwood floors over time. While it’s great for glass and certain countertops, it’s not safe for every surface.

Before using vinegar as a go-to cleaner, check whether the material can actually handle it.