The master level mirrors the IMP. The intermediate level is usually found in the proposal and contains all the end-to-. end activities, but at the âmacroâ level. The detailed IMS is usually a rolling wave planned at the week level.
Instructions. 1  Baking soda Baking soda is the best household item you can use to get the accumulated gunk off your old bathtub. 2  Mix two parts of baking soda and one part of hydrogen peroxide in a small glass bowl. 3  Apply this paste on your enameled bathtub or sink and let it set for about 30 minutes.nstructions. 1  Baking soda Baking soda is the best household item you can use to get the accumulated gunk off your old bathtub. 2  Mix two parts of baking soda and one part of hydrogen peroxide in a small glass bowl. 3  Apply this paste on your enameled bathtub or sink and let it set for about 30 minutes.
1 Soak a sponge in the solution and gently wipe down the tub, then rinse your tub or shower with warm water.  Liquid dish soap â To use soaps as cleaners for acrylic tubs, simply apply a generous amount inside the bath or shower and let it sit for 10 to 15 minutes. Afterwards, wipe it away using a damp cloth, then rinse the tub with warm water. Name-brand dish soaps such as Palmolive, Joy, and Ivory are excellent options.