Oil builds up in a Bengali kitchen slowly enough that you stop seeing it — until a cabinet door feels tacky under your fingers. That film is what brings cockroaches in, and it is what clogs the chimney filter until the smoke starts coming back into the room.
We use food-safe degreasers, which matters on surfaces where food is prepared. Chimney filters come off and are degreased separately, burners are removed and soaked, backsplash tiles are scrubbed, and the sink is descaled rather than just wiped.
Worth knowing: pest control works far better booked right after a kitchen degrease — with the food source gone, the treatment lasts much longer.