How to use a tumbler healthily and for a long time

Tumblers are easier to maintain temperature and help protect the environment compared to disposable paper cups. However, improper use can negatively affect health, so caution is necessary.

◇ Avoid storing beverages for extended periods

A tumbler left at room temperature can become a breeding ground for bacteria. The habit of slowly drinking beverages stored in a tumbler can lead to bacterial growth.

The area that touches the lips is where bacteria proliferate more actively, and protein drinks such as soy milk or milk should be consumed within 2 hours.

Generally, storing beverages for more than 5 hours increases the risk of bacterial growth, and they may develop odors or discoloration inside. It is best to wash the container immediately after drinking, but if that's not possible, rinsing with water is recommended. Be careful when shaking hot water inside, as the internal pressure can cause the lid to explode.

◇ Wash well and dry thoroughly

Proper tumbler cleaning methods are also important. If you do not clean the tumbler properly, there is a high chance of bacteria proliferating. The inside and the lid must be thoroughly cleaned.

According to experts, bacteria tend to form biofilms over time. These biofilms are not easily removed with water alone. Therefore, do not rinse only with water; instead, scrub thoroughly with a brush to clean.

Do not use household bleach to remove staining from the tumbler. It is better to use a tumbler-specific detergent or natural detergent.

If you fill with lukewarm water mixed with baking soda for about an hour and then rinse, you can remove water stains and bad odors.

If you break the eggshell and shake it with lukewarm water, you can remove water stains and residue. The lid and rubber gasket should be soaked in lukewarm water with vinegar or baking soda for 10 to 20 minutes, then cleaned with a soft toothbrush.

It is also important to thoroughly dry the tumbler. Closing the lid while it is still wet can promote bacterial growth, so it is best to use it only after it has been completely dried.

Precautions When Using a Stainless Steel Tumbler

It is prohibited to use a steel scrubber when cleaning a stainless steel tumbler. The metal may scratch or the interior may corrode.

Over time, rust can form, changing the shape and potentially spoiling the taste of beverages. A soft brush or plastic scrubber should be used.

Putting a tumbler in the microwave is also prohibited. Electromagnetic waves cannot pass through stainless steel, which can cause a fire.

◇ Can I keep using the same tumbler repeatedly?

Tumblers are consumables. The recommended replacement period is relatively short, between 6 months and 1 year.

Just because this period has passed doesn't mean you need to replace it immediately, but using it for too long may expose you to heavy metals.

In Taiwan, there was a case where a man died from lead poisoning caused by rust and corrosion in his stainless steel tumbler that he used daily.

Although it is an extreme case, using Tumblr for too long or using products made of poor materials can pose health risks.

Therefore, if the tumbler has many scratches, discoloration, or reduced insulation and cooling effects, it is advisable to replace it.

◇ Proper disposal is part of environmental protection

When disposing of a tumbler, it is helpful to the environment to separate and dispose of it properly.

Stainless steel single-material tumblers should be washed thoroughly and separated for recycling. Products made of a mixture of plastic and silicone should be disposed of as general waste.