Japanese have to separate their trash very finely. In my case, Mon, Wed and Fridays are for burnable trash. Tuesdays for paper garbage. Thursdays for glass and PET bottles and cans. Saturdays are for recyclable plastic garbage. Sundays are for newspaper.
Besides, some towns tell the residents to buy plastic trash bags from them. If your trash is not in the designated trash bags, it won’t be collected. Also, the prices of the bags are not so low. This policy sounds strict, but it helps to reduce garbage.