Cheshire Police have received a report of suspicious activity in the Little Neston area.
Two young males were seen approaching a property and one opened the porch door.
When spoken to by the occupant, the males claimed they were offering to wash cars, however they did not appear to have any equipment with them and quickly left on foot.
The police say any suspicious activity can be reported on their non-emergency number of 101. In an emergency dial 999.