In the bathroom that has just been renovated, why are the joints of the floor tiles already yellowed

It should still be in the warranty period, find the construction unit, rework, trivial things, don't worry, check other projects well, if there are unqualified, do a good job.

The squatting pit is not equipped with a water trap.

Or buy a re-install one with a trap, but the pit will be higher than the ground. >>>More

Hello, ventilation.

Toilets must be kept ventilated. If it is not airy, even if you clean it, there will be a musty smell. >>>More

The smell of formaldehyde, new houses are like this, generally after half a year to live in, otherwise the harm to the human body is too great.

This was originally wiped clean by the masters while doing it, and they had to fill the joints after they were done, or they would dry it out and then do the beautiful seams, if these processes were done and there was still residual cement, use a scraper or shovel to get rid of it, but you have to pay attention not to get rid of the floor tiles, and there is also a kind of soaking with industrial sulfuric acid for half an hour, and then using a plastic shovel to remove it, and then rinsing it with clean water, that is, this method smells too big when soaking and rushes the nose, some people can't stand it, it depends on how you choose!