What do you put in the dispenser to “ clean the tub” meaning name of product

We do not have a list of brands or names for specific cleaning agents that can be used in the tub of the ENERGY STAR® Certified LG WashTower™ Stacked Laundry Center with 4.5-cu Ft Front load Washer and Electric 7.4-cu Ft Dryer, Model # WKEX200HBA. There is a variety of available cleaning lime scale agents, and powdered cleaners that can be added to the unit's main detergent compartment or cleaning tablets that can be added directly to the tub when using the Tub Clean cycle, or you can add Liquid Chlorine Bleach to the bleach compartment of the unit's detergent dispenser as described on page 37 in your owner's manual. You may already be familiar with some cleaning agents, but which brands you prefer to use is at your discretion...^Ivan.