Police are asking for help tracing people selling equipment from the back of a van.
Officers say calls relate to suspicious persons selling equipment from the back of hired vans and cars, especially around Falmouth and Helston, including Port Navas.
A police spokesman said low cost products, including chainsaws were being offered and urged caution in buying.
He added: “If you are approached and have concerns, please contact police. Particularly useful would be descriptions of vehicles, including number plate details and persons.”
Contact police on 101.