The answer to 'when to clean kitchen' is that kitchen cleaning should be done on a regular basis, typically 1-2 times per week. This helps maintain a clean, healthy, and organized kitchen environment. The frequency of cleaning can vary depending on factors such as how often the kitchen is used, the number of people in the household, and the types of meals prepared.
For general kitchen cleaning, it's recommended to wipe down countertops, clean the sink, and sweep or mop the floor at least once a week. More thorough cleaning, such as oven cleaning, refrigerator cleaning, and deep cleaning of cabinets and drawers, should be done every 1-3 months. It's also important to clean as you go, wiping up spills and cleaning as you cook to prevent buildup of dirt and grime.