Yes, when the microwave oven is used for the first time, does the oven cavity need to be cleaned? Otherwise, there will be a lot of bacteria in the new microwave oven.

Other precautions when using the microwave oven for the first time:

1. Ventilate and dry after cleaning

Clean the microwave oven before using it for the first time. Regardless of whether the microwave oven is used or cleaned and scrubbed, there will be water vapor or moisture in the oven cavity. Therefore, you should wipe it dry with a dry cloth or open the oven door slightly to allow it to ventilate and dry. This will greatly reduce the failure rate of the microwave oven and extend the service life of the microwave oven.

2. Avoid collisions

Do not collide or twist the oven door to avoid excessive leakage of the microwave oven. When there is an abnormality or problem with the microwave oven, it needs to be repaired by professionals. Do not maintain and continue to use it yourself.

Extended information:

Taboo foods in microwave ovens:

1. It is strictly forbidden to use microwave ovens to heat sealed foods, such as bagged, bottled, canned foods, and food with Skin and shelled foods, such as chestnuts, eggs, etc.

2. Avoid heating meat until it is half-cooked and then heating it in a microwave oven: bacteria will still grow in half-cooked food. When heating it in a microwave oven for the second time, it is impossible to remove the bacteria due to the short time. Kill them all. Frozen meat products must be defrosted in a microwave oven before being reheated into cooked food.

Reference: People's Daily Online-Microwave oven taboos: These foods cannot be put in the microwave