A clever and eco-friendly laundry hack has been gaining popularity worldwide, and all it requires is something you likely already have at home—two empty plastic water bottles. While it may seem strange at first, this simple trick has been praised for improving the look, feel, and freshness of clothes while also reducing waste.

The method is straightforward: take two clean, empty bottles (16–20 oz is ideal), remove the labels, ensure the caps are tightly screwed on, and place them directly into your washing machine with your regular laundry and detergent.

As the cycle runs, the bottles tumble among the clothes, creating space and movement that help prevent garments from tangling, reduce wrinkles, and allow detergent and water to reach more fabric surfaces for a more thorough clean.

This improved circulation can lead to brighter, fresher clothes, faster drying times, and even reduced energy usage, since smoother clothes require less ironing and dry more efficiently. Beyond the laundry benefits, it’s also an excellent way to reuse plastic bottles, giving them a second life before disposal and helping lower your household’s plastic footprint.

Many users even report a quieter spin cycle, as the bottles help balance the load and soften fabric impact inside the drum. For best results, avoid overloading your washer so the bottles can move freely, use sturdier bottles that won’t crush, and remove clothes promptly after the wash to minimize wrinkles.

Adding vinegar to the rinse cycle can further soften fabrics, and combining this trick with dryer balls can maximize results in the drying phase. This small, low-cost change offers multiple benefits—better clothes, lower bills, and a more sustainable routine—proving that sometimes the simplest solutions can make the biggest difference.