In May Stamford police warned they would not hesitate in handing out fines to people caught dropping litter, pledging regular patrols of grotspots and punishments for people flouting the law.
But since then they say people are still making a mess. According to police, they have spoken to people in and around Stamford to let them know of litter regulations but have been unable to catch rubbish droppers red-handed.
PC Dave Bannister says regular patrols are being carried out litter hotspots.
He believes part of the problem stems from the fact many people are careful of their actions in front of police, but disregard the law when officers are elsewhere.
PC Bannister said: "If we see anybody dropping litter we will fine them.
"When we're at places like The Meadows people either put their rubbish in the bin or take it away.
"But at times when we're not patrolling an area it's harder to catch people who drop litter.
"If we see them next to litter they will often claim it was there when they go there."
Stamford police have announced they will be working in partnership with South Kesteven District Council to put posters around town warning people about the consequences of dropping litter.
They say patrols of litter hotspots will continue.