Next to the room is the bathroom, some time ago I found that the cabinet in the room was a little da

It's the same in my house, but basically there is no way to prevent moisture, you can open more windows for ventilation, if the climate in the northeast is dry, there will be no problem, you can turn on some air conditioning in winter to remove moisture.

I bought moisture-proof and mildew-proof balls in my closet, which are sold in supermarkets, but the effect is not obvious.

Mothballs remove musty odor. Lime powder (bagged) charcoal will also work. Beware of camphor allergies.

What needs to be dealt with is the waterproofing of the bathroom;

It is better to change the cupboard for clothes.

The connection between the toilet and the drain pipe is leaking, because the height of the drain pipe is not enough, the depth of the outlet of the toilet into the drain pipe is not enough, and the connection is not filled tightly; The waterproofing treatment in the bathroom is not good, and after the toilet is used, the floor is watery, the walls are damp, and even the lower roof wall is damp and dripping.

The main reason for this is that the bathroom wall did not have the height of waterproofing in place before tiling, and now the only way to do this is to minimize splashing water on the wall, or paint the damp wall several times, and then apply wallpaper or wall cloth.