Professional house cleaners spill their 10 best-kept secrets to save time & effort. 1 tip: how to remove grease/dirt build up from kitchen cabinets. 1st heat slightly damp sponge/cloth in microwave for 20 - 30 sec. until it's hot. w/rubber gloves, spray cabinets w/ an all-purpose cleaner containing orange oil, then wipe off cleaner w/ hot sponge. Makes the kitchen look & smell wonderful too!