Windex is a go-to for streak-free glass, but it doesn’t work magic on everything. In fact, its ammonia and alcohol can ruin many surfaces, causing permanent damage and costly repairs.
To protect your home, here are 15 things you should never clean with Windex—and what to use instead.
1. Leather Furniture
Ammonia and alcohol in Windex strip natural oils from leather, leading to cracking, fading, and premature aging. Regular use can quickly ruin the softness and appearance of your furniture.
A leather-specific cleaner and conditioner is a better option. These products are formulated to nourish and protect leather, keeping it durable and supple.
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2. Shower Doors
Though tempting for water spots, Windex often leaves streaks and residue on shower doors. Over time, these marks can worsen, making the doors look cloudy and unclean.
For tough soap scum and hard water stains, use a Magic Eraser with vinegar or Scrubbing Bubbles. These solutions clean effectively without leaving streaks behind.
3. Plexiglass
Using Windex on plexiglass can result in scratches, cloudiness, or discoloration. Ammonia in the formula is particularly harsh on this sensitive material.
A mild soap and water solution or an ammonia-free glass cleaner works best. These options clean without harming the surface.
4. Stainless Steel Appliances
Windex causes streaking on stainless steel appliances and may even lead to corrosion over time. The chemicals react poorly with the metal’s surface, leaving it uneven.
For a polished, smudge-free look, choose a cleaner made specifically for stainless steel. These products enhance shine while protecting the material.
5. TV or Computer Screens
Ammonia-based cleaners like Windex can damage the coatings on TV and computer screens. This may cause discoloration or even permanent harm to the display.
A microfiber cloth and a specialized screen cleaner are safer options. Use gentle pressure to remove dust and smudges without scratching the surface.
6. Car Windshields
While convenient, Windex isn’t effective for the grime on car windshields. It often leaves streaks that impair visibility, posing a driving hazard.
Automotive glass cleaners are designed for the job. Pair them with lint-free rags or newspaper for a spotless, streak-free finish.
7. Granite or Marble Countertops
Harsh chemicals in Windex degrade the sealant on granite and marble countertops, making them prone to stains and etching.
A pH-balanced cleaner specifically for stone surfaces will preserve their beauty and durability. Regular maintenance keeps them looking elegant.
8. Laminate Countertops or Glass Stovetops
Using Windex on these surfaces can dull their finish and leave scratches. Over time, the damage may be difficult to repair.
Gentle cleaners designed for laminate or glass stovetops are safer and help maintain their shine. Choose options that protect against wear and tear.
9. Copper
Applying Windex to copper won’t remove tarnish and may even worsen the discoloration. Its harsh chemicals can damage the metal’s surface and patina.
A copper-specific cleaner restores shine without harming the material. These products remove tarnish gently, preserving the metal’s natural beauty.
10. Wood Furniture
Alcohol and ammonia in Windex strip finishes from wood furniture, leaving surfaces dull and lifeless. In some cases, it may even cause warping or discoloration.
Stick to gentle wood cleaners or mild soap and water for cleaning. Always test on a small, hidden area before applying broadly.
11. Painted Walls
Using Windex on painted walls can strip paint and leave unsightly marks, especially on matte or low-sheen finishes.
A mix of warm water and dish soap or a mild all-purpose cleaner works better. Spot-test first to ensure no damage occurs.
12. Eyeglasses
Windex damages protective coatings on eyeglass lenses, leading to scratches and reduced clarity. Its harsh formula isn’t suited for this delicate task.
A microfiber cloth and a gentle eyeglass cleaner will keep lenses clear and free from damage. Avoid paper towels, as they can scratch the surface.
13. Jewelry
Delicate metals and stones can tarnish or discolor when exposed to Windex. Ammonia may etch softer stones, causing irreversible damage.
Warm water and mild dish soap are effective for most jewelry. For specific materials, use a cleaner designed for the metal or gemstone type.
14. Mirrors with Antique or Decorative Frames
Windex can strip finishes from intricate frames, especially vintage or decorative ones. The chemicals may cause deterioration over time.
Use a soft, dry microfiber cloth for light cleaning. For tougher jobs, choose a mild cleaner and avoid saturating the frame.
15. Brass Surfaces Require Special Care
Brass is a sensitive material that can tarnish or discolor when exposed to the ammonia in Windex. This reaction dulls the metal’s natural shine and can cause lasting damage, especially to decorative or antique brass items.
A dedicated brass cleaner or a mixture of lemon juice and baking soda is a safer alternative for restoring its luster. Gently apply the cleaner with a soft cloth, and follow up with regular polishing to maintain the metal’s brilliance without risking harm.
While Windex is an effective cleaner for glass surfaces, it’s important to remember that it’s not suitable for every material. By being mindful of what you use this popular product on and opting for gentler alternatives when necessary, you can keep your belongings looking their best without risking unnecessary damage.
Davin is a jack-of-all-trades but has professional training and experience in various home and garden subjects. He leans on other experts when needed and edits and fact-checks all articles.