Gardaí have received a number of complaints from worried householders who were forced into uncomfortable situations by pushy door-to-door callers.
Gardaí are appealing to the public to inform them of any such callers, who they fear could be using door-to-door sales to target houses for robberies.
“We would ask people not to let people in unless they know them,” Sgt John McDonald of Waterford garda station said.
“These people can be very pushy ... we don’t want to alarm people, but if they are unsure about anything they should contact their neighbours or the gardaí,” he added.
The warning follows numerous break-ins at private houses in the outskirts of the city over the last number of days, including houses at Marian Park, Congress Place, Connolly Place and the Cork road area.
Gardaí say the houses were all unoccupied during the robberies, which occurred at different times of the day.
Entry was also forced into five business premises in the Park Road and William Street areas at the weekend, with a small amount of cash stolen from two of the premises.
“We have no idea if there was any link to these incidents although they are all in close proximity and along the one trail,” Sgt McDonald said.
Gardaí reiterated the importance of neighbourhood cooperation, which recently led to the successful apprehension of two youths at a house on the Dunmore Road area.
“Neighbours in particular can play a big part here if they can keep in contact with one another and report anything unusual to ourselves,” he said.
“We are not unduly concerned, but unfortunately at this time of the year a lot of people involved use the cover of darkness to avail of the opportunity to target houses,” he added.