Why Are People Putting Empty Plastic Bottles in the Washing Machine? The Simple Laundry Trick That Surprises Many

At first glance, tossing an empty plastic bottle into a washing machine sounds like a mistake. After all, plastic bottles belong in the recycling bin—not mixed in with your laundry.

Yet many people claim this unusual household hack can help improve washing results, reduce wrinkles, and even make clothes come out cleaner. So, what's really behind this popular trick?

Let's take a closer look.

The Idea Behind the Plastic Bottle Laundry Hack

The method is simple: before starting a wash cycle, some people place one or two empty, clean plastic bottles (with the caps tightly secured) into the washing machine along with their clothes.

As the machine spins, the bottles move around inside the drum. Supporters of the trick believe this movement helps separate clothing items, preventing them from bunching together into large tangled masses.

When clothes remain more evenly distributed, water and detergent may circulate more effectively throughout the load.

Potential Benefits People Report

1. Less Tangling of Clothes

Large items such as bed sheets, blankets, and towels often twist together during washing.

Advocates of this hack say the bottles help keep fabrics moving independently, reducing the chances of large items wrapping around smaller garments.

2. Better Water Circulation

When laundry becomes tightly packed, water and detergent may not reach every area as efficiently.

The movement of the bottles may help create additional space between garments, allowing water to flow more freely through the load.

3. Fewer Wrinkles

Some users report that clothes come out with fewer creases because the fabrics are less compressed during the wash cycle.

While the effect may vary, anything that helps prevent excessive twisting can potentially reduce wrinkling.

4. Improved Drying Efficiency

When clothes emerge from the washer less tangled, they often dry more evenly afterward, whether air-dried or machine-dried.

How to Try It Safely

If you decide to experiment with this trick, keep these precautions in mind:

• Use only empty, clean plastic bottles.
• Make sure the caps are tightly closed.
• Avoid damaged, cracked, or brittle bottles.
• Limit the number of bottles to one or two.
• Do not overload the washing machine.
• Stop using the method if you notice unusual noise or excessive impact inside the drum.

Does It Really Work?

There is limited scientific research specifically examining the effectiveness of plastic bottles in washing machines. Much of the popularity of this hack comes from personal experiences shared online.

Some people notice a difference, while others report little to no change. Results may depend on the type of washing machine, the size of the load, and the kinds of fabrics being washed.

In other words, it is not a guaranteed solution, but rather a simple household trick that some users find helpful.

Alternative Ways to Improve Laundry Results

Whether or not you try the plastic bottle method, these proven laundry habits can help:

• Avoid overloading the machine.
• Sort clothes by fabric type and weight.
• Use the correct amount of detergent.
• Wash bulky items separately when possible.
• Choose the appropriate wash cycle for the load.
• Clean your washing machine regularly.

These practices often have a greater impact on washing performance than any laundry hack.

Final Thoughts

The idea of placing empty plastic bottles in a washing machine may seem strange, but the logic behind the trick is surprisingly simple. By helping clothes move more freely during the wash cycle, the bottles may reduce tangling and improve circulation inside the drum.

While results vary from household to household, some people consider it a useful trick worth trying—especially when washing large items that tend to bunch together.

As with any home hack, use common sense, follow your appliance manufacturer's recommendations, and stop immediately if the method appears to affect the machine's normal operation.

Sometimes the most unexpected household tips are the ones that spark the most curiosity.