Professional house cleaners spill their 10 best-kept secrets to save time and effort. 1 most definitely liked was how to remove grease/dirt build up from kitchen cabinets. Say to clean cabinets, 1st heat slightly damp sponge/cloth in microwave for 20- 30 sec. until it's hot. Put on a pair of rubber gloves, spray cabinets with an all-purpose cleaner containing orange oil, then wipe off cleaner with hot sponge.