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

An ordinary plastic bottle may help improve your laundry in an unexpected way.

Most people throw away empty plastic bottles without a second thought. However, a simple household trick involving an empty plastic bottle and your washing machine has gained popularity online. Many people claim it helps clothes come out cleaner, softer, and with fewer wrinkles—without spending any extra money.

While it may sound unusual, there is a simple explanation behind why some people are trying this laundry hack.

How Does the Plastic Bottle Trick Work?

The idea is simple. Before starting a wash cycle, place a clean, empty plastic bottle with its cap tightly closed into the washing machine along with your clothes.

As the drum rotates, the bottle moves freely among the garments. Some people believe this movement helps separate clothing during the wash, allowing water and detergent to circulate more evenly.

Supporters of the trick say it may:

• Help reduce tangling of clothes.
• Improve water circulation between garments.
• Minimize wrinkles after washing.
• Make clothes feel slightly fluffier after drying.

Although scientific evidence is limited, many users report positive results when washing lightweight everyday clothing.

Which Bottles Work Best?

Not every bottle is suitable for this method.

For the best results:

• Use a clean plastic bottle with the cap tightly secured.
• Choose a medium-sized bottle (around 500–600 ml).
• Avoid damaged or crushed bottles.
• Never fill the bottle with water.

Safety Tips

Before trying this laundry trick, keep a few precautions in mind:

• Do not overload the washing machine.
• Avoid using the bottle when washing delicate fabrics such as silk or lace.
• Stop using the method if you notice excessive noise or unusual movement inside the drum.
• Make sure the bottle cannot leak or break during the wash cycle.

If your washing machine manufacturer advises against placing foreign objects inside the drum, always follow the manufacturer's recommendations.

Other Easy Laundry Tips

Besides the plastic bottle trick, these habits may help improve washing results:

• Sort clothes by color and fabric type.
• Use the recommended amount of detergent.
• Avoid overloading the drum.
• Clean the washing machine regularly.
• Leave the door open after each wash to reduce moisture and odors.

The Bottom Line

The empty plastic bottle trick has become a popular household hack because it costs nothing and is easy to try. While results may vary depending on the washing machine and the type of clothing, many people enjoy experimenting with simple methods that could make laundry a little easier.

Whether or not this trick works for everyone, proper washing habits and regular machine maintenance remain the most reliable ways to keep clothes looking their best.