mold cleaning is vital to any home or business. the first step is to identify where the potential mold spots are such as damp or humid environments. after that regularly monitoring these areas can help detect mold growth in the early stages. if mold is identified make sure to use the proper cleaning products and wear the proper personal protective equipment. 

i would start by scrubbing the effected area with and vinegar. using a sponge or brush depending on the severity of the contamination. if the contamination is severe i would use a mixture of water and bleach without mixing bleach with ANY other cleaning products. then i would ventilate the area thoroughly. the next step would be to dry the area as deeply as possible to prevent the mold from reforming, using a fan or humidifier.