Why does the bathroom floor drain have white salt slurry?

Because the water will flow to the drain inside the bathtub, if there is water accumulation outside, it means that you have not done a good job of retaining the water. Note that if the toilet in the building often accumulates and causes water seepage in the homes below (especially those old houses before World War II), not only do you need to compensate for the loss downstairs, but you also have to pay for a full set of waterproofing yourself, and this is not covered by housing insurance, and it is not the landlord's obligation.

It should be too many impurities in the floor drain groove, clean it up often, and ensure that there is water for a long time.

The main reason is that the general sewage pipe on your floor is starting to be blocked, and it is best to find the property to open the mouth of the sewage pipe for dredging. Otherwise, it will be more congested after a long time, and the fecal water of the users upstairs will still pour into the house.

I don't know what kind of odor-proof floor drain you said, the general floor drain has two kinds of water seal and rubber seal, if it is water sealed, ensure that the water surface of the water seal is higher than the lower edge of the floor drain cover, if it is a rubber seal, it is generally sealed, the water does not flow down, and then press it is open, the water can flow down, the smell can also be turned up, you just need to ensure that the floor drain is closed at ordinary times.

The white things in the bathroom are made up of dust, bacteria, and sometimes dust formed by people walking, so they are made up of utensils.