Police are appealing for information to help identify dirt-bike riders who are racing through a residential park at all hours of the day and night.
One resident said he was surprised there had not been a serious accident yet.
Waikiki resident Rodney Woods lives next to Charnley Reserve, and said he had recently seen two men riding their bikes through the park at least twice a day.
“This has been happening a while and I hear them all of the time,” he said.
“They aren’t wearing any sort of protective clothing, no helmets and are riding without headlights or indicators, sometimes at 3am,” he said.
Mr Woods said he had seen riders doing wheelies down the road adjoining the park and speeding through a nearby roundabout without stopping for cars.
“I’ve even seen children as young as five riding on the back of bikes without a helmet,” he said.
Rockingham Police Station fficer-in-charge Senior Sergeant Brett Reyne said photographs or videos of incidents helped police to build a case but urged anyone taking photos to do so safely.
“We don’t want people to put themselves in harm’s way, but if they can discreetly take photos that can help us to put evidence together,” he said.
Baldivis MLA Reece Whitby said he was concerned there might be an accident soon and appealed to nearby residents to help identify those involved.
“Someone will know who these two men are and it’s not a matter of dobbing people in, it could be a matter of saving lives,” he said.
City of Rockingham Mayor Barry Sammels said the City had not been made aware of the issue but if police requested assistance, the City would assess whether it was possible to provide CCTV coverage.
Anyone with information about rogue riders is asked to contact Crime Stoppers on 1800 333 000 or report online.