Monthly bin collections for around 2,000 homes are being trialed by Fife Council.
The pilot scheme, among the first in the UK, means some households in the Glenrothes area will have their landfill waste collected every four weeks instead of fortnightly.
The council hopes it will boost recycling rates.
Despite Fife having above average recycling rates, the council believes half of the rubbish in blue landfill bins could be recycled.
A further 2,000 properties will have their rubbish picked up every three weeks.