One lesser-known benefit of using onions on windows is their potential to repel certain insects. The strong sulfur odor in onions acts as a natural insect repellent. While this won’t replace a full-fledged pest control solution, it may help keep a few flies and mosquitoes at bay around the areas where you’ve used the onion. “The sulfur compounds in onions can deter insects, which makes it a dual-purpose hack,” says pest control specialist Tim Roberts.
Does This Hack Work on Other Surfaces?
While the onion trick is primarily popular for windows, some have found it effective on other glass surfaces as well, such as mirrors and glass doors. Just as with windows, the onion’s acids can help eliminate fingerprints and grease from mirrors, leaving them with a polished finish.
However, it’s best to avoid using onions on porous or wood surfaces, as the onion juice can be absorbed and leave an unwanted smell.
Additional Tips for the Best Results
To get the most out of this method, here are a few tips to consider:
Use Fresh Onions – The fresher the onion, the more potent the natural acids will be. If the onion slice has dried out, it won’t be as effective.
Avoid Over-Rubbing – A light rub should suffice. Pressing too hard might smear the juice unevenly, causing streaks.
Combine with a Vinegar Solution – For an extra shine, consider wiping the window with a diluted vinegar solution after using the onion. This can help remove any residual onion smell and add more sparkle to the glass.
Potential Downsides to Keep in Mind
While this hack has its perks, there are a few things to watch out for:
Smell – Onions have a strong odor that may linger, especially if the windows are in a closed area. This smell usually fades quickly but might be an issue if you’re sensitive to onion scents.
Limited Effect on Heavy Grime – For windows that have not been cleaned in a while or have accumulated layers of grime, the onion hack may not be enough. In these cases, you may need to use a commercial cleaner first to break down the dirt, then use an onion for a final polish.
May Not Work for Everyone – Since this is a natural method, results can vary. Some people find it effective, while others might not notice much of a difference, especially if they’re used to more potent chemical cleaners.
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