Is it obligatory to purify places touched by a baby girl's urine, even if they may not be used for prayer, but for walking through with wet feet or eating?

If you doubt the transfer of impurity, do not rule that it has transferred. If you are certain of its transfer, then hasten to purify the defiled areas to prevent its spread. As for the transfer of impurity from a defiled body to something that comes into contact with it while it is wet or moist, there is a difference of opinion on this.