There are some hidden dirt in a room that sweeping alone will not have the power to eradicate, it takes extra work of mopping to keep the room clean.
Mopping helps to remove extra dirt and dust from the room helps to keep the under of the feet from getting stained.
It could be very annoying when you have finished sweeping a room to the best of your ability, and you still notice some trace of dirt in the room or you feel sand under your feet, the reason is because you have not mopped your room, it may need some wet substance to get the room totally neat.
You will need a mop stick, a detergent and water to get the room totally neat and completely avoid any form of dirt whatsoever.
Staying in a neat room keeps you comfortable, relaxed and calm. It takes away every form of anger that could result from staying in a dirty room.