A dirt bike and six knives were among the items seized by police during a clampdown on antisocial behaviour around Harold Estate, Swan Mead Estate and Hazel Way last week.
Grange ward safer neighbourhoods team carried out the 'estate sweeps' which involved a search of all communal areas, gardens and grounds to look for any hidden items that a suspect may have deposited in an attempt to abandon or hide it with a view to returning to collect it at a later stage.
On Wednesday officers found five knives in an hour and the following day they recovered a further knife and a dirt bike.
Officers had received numerous complaints about youths riding the dirt bike across Spa Gardens and creating a noise nuisance.
PC Graham Baker said: "Grange SNT is dedicated to responding to the community's concerns around knife crime and antisocial behaviour.
"These actions are an example of our commitment that will continue into the future.
"We always welcome feedback from the community and continue to work with our partners in reducing crime and addressing the priorities set by the community."