Buzz
I’ll confess right away—I’m a huge fan of Windex. It’s affordable, widely accessible, and convenient for spritzing on surfaces like mirrors (expected!) and even tables (unexpected!) for a speedy clean. However, it turns out that this specialized glass cleaner isn’t suitable for all surfaces and can actually harm some materials. Here’s a list of what you should steer clear of spraying.
Plexiglass
This might come as a surprise, but Windex is a no-go for Plexiglass. If you own artwork framed with it or other decor made from this material, step away from the bottle. According to Reader’s Digest, certain Windex formulas contain ammonia, which can damage Plexiglass. While the ammonia-free variant is safe, you must double-check the label to ensure you’re using the right one. Purchase it here for approximately $4.
Soap-scum-covered shower doors
Reader’s Digest also advises against using Windex on shower doors, especially if they’re coated in soap scum. Windex isn’t effective at breaking it down. Instead, you can use simple dish soap or a Mr. Clean Magic Eraser to remove the buildup. To prevent scum from forming, keep a dish wand filled with dish soap in your shower and use it to clean the doors after every use. Once the doors are scum-free, Windex can be used, though it might not even be necessary.
Television screens
Windex is unsuitable for cleaning TV screens or any tech screens. As CNET explains, modern screens have delicate coatings that can be permanently damaged by harsh chemicals. Instead, mix dish soap with water and use a microfiber cloth. Check out our complete guide to safely cleaning a TV, which excludes Windex unless you’re dealing with an older TV with a plain glass screen.
Granite countertops
Porous countertop surfaces, such as granite and marble, should never be cleaned with Windex or other harsh chemicals. Despite their sturdy appearance, they are quite delicate. Strong cleaners can penetrate the pores, causing stains or degrading the sealant. Instead, opt for dish soap mixed with water or a baking soda paste for tougher stains. If the sealant is already damaged (whether from Windex or other causes), consider resealing, which is recommended every four years or so.
Unsealed wood
As Apartment Therapy notes, Windex can be used sparingly on hardwood surfaces with durable finishes and sealants. However, untreated or unvarnished wood can be stained by Windex, defeating the purpose of cleaning. Stick to soap and water for these surfaces.
Car windows
Avoid using Windex on car windows, as Glass Doctor advises. The potential presence of ammonia can harm window tint and make it harder to achieve a streak-free finish. Specialty automotive glass cleaners are a safer and more effective choice.
