Mops often get hard after cleaning and staying in dry spaces. If your mop is hard and stinky, keep its head in warm water for a while and use an effective detergent to clean the mop.u003cbru003eu003cbru003eIt will soften the mop and improve its lifespan.u003cbru003eIf it is extra hard and has attracted mildew, you must consider replacing it with a new mop head. Otherwise, it would spread infections and a foul smell in your home.