shopping trolleys with litter

On choosing a trolley the first one contained crumpled paper, the second one had cherries spilt into it and the third had a used facial tissue in it. I showed the manageress who said that the trolleys are washed in the morning and afterwards the customers soil them. She picked up the cherries in her hand and was clearly not going to take any further action. As this was at 10 a.m. on Saturday morning the trolleys had certainly not been washed this morning. This is unacceptable and a policy needs to be instituted for the managers to follow.