About half of the local authorities in the UK currently operate so-called "alternate week collections", whereby recyclable waste is removed one week, and black bag rubbish the next.

BBC: Call to recycle food separately

Police watched the same man walk across the street to Uncle Nick's Pizza, dropping a bag into the rubbish there.

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What most of us do with our rubbish is we throw it into one bag altogether and then it gets picked up once a week.

BBC

Then, hearing the boy flush the toilet in the cubicle behind her, she scooped up the nasty mess with some paper towels and dropped it into the black bag she had with her for rubbish, so that he would not have to see it.

NEWYORKER: Friendly Fire