As well as leaving broken bottles and glass behind, they also vandalised the slides in the playpark.
The area of High Moss, near Bishopbriggs Community Church, was cleaned up last year by East Dunbartonshire Council after residents complained to the Herald.
But according to one woman the problem is now as bad as ever.
She said: “It has started up again with the recent good weather.
“There are smashed bottles and a supermarket trolley even ended up in a tree.
“The children’s slides in the playpark have also been vandalised.
She added: “We have this beautiful area on our doorsteps and it is being treated like this.
“It’s an absolute disgrace. Why do they have to do this?”
Another resident said: “People walk through this area with their kids or dogs and they are having to dodge the rubbish.”
Both residents said they had informed police.
A police spokesman told the Herald they were aware of the problem and extra officers would be patrolling the area.
He added: “If anyone has any further information which can help or if they they see anything of suspicion or concern don’t hesitate to contact the police.”
Thomas Glen, Depute Chief Executive of Place, Neighbourhood & Corporate Assets said that community wardens had not received any complaints about the area this year.
However, he added: “Wardens will now mark it as a ‘hotspot’, carrying out regular patrols to deter disorder.
He said the council would also inform police about the issue.