Is it permissible to clean three times with a wet cloth or rag to purify from urine and feces on the ground, instead of pouring water, especially for those who suffer from obsessive-compulsive disorder?

To purify a carpet from a boy's urine, absorb the impurity with a sponge or a cloth, then pour water over it and repeat the process two or three times until it is highly probable that the impurity has been removed. The pouring of water should be light and only on the spot of impurity.

As for tiles, it is sufficient to clean them with a wet towel or cloth several times, washing the towel/cloth in between, because tiles do not absorb impurity. It is a condition that the traces of impurity, such as color and smell, are removed.