- Video report by ITV News Anglia's Helen Keenan
People in Milton Keynes are being urged not to drop litter in the town's parks.
It comes after a charity revealed more than £300,000 is spent a year to clean up rubbish.
The amount of litter picked up by the park rangers and volunteers increased by 35% in the last year.
Rob Riekie, from The Parks Trust, said: "As you can see a dropped crisp packet here or a drinks bottle there adds up, and really does have a huge impact on the parks - both in terms of how they look to other users and how much we can spend on managing and improving them.
"What people often forget is that we are a self-financing charity not funded by the council tax or government. Every penny we spend has to be found from the money we earn from our activities and from our investments."