Wirral Council has faced claims it "rewarded" its bins contractor while no rubbish was being collected due to strike action.
The local authority’s bin collection is handled by Biffa to collect waste across the Wirral but when more than 200 workers walked out in December, collections stopped.
The strike was called off after workers secured a pay rise when council leader Janette Williamson held talks on Christmas Day to end the dispute. However it took several weeks for the bin collections to catch up due to extra rubbish building up over the holiday period.