CCTV footage of two men wanted in connection with a number of attacks on a house in Worsley in Greater Manchester, England was released by police.
The images were taken after the first incident at the house on Alfred Avenue on 20 March 2013.
Shortly before 1.30pm unknown offenders walked round the house with a hammer, smashing 29 windows, before walking off.
Since then there have been a number of other suspicious incidents that appear to target the same house including, on 10 April, where a person was seen trying to break into the house.
They then threw a container containing sawdust, dried insets and a dead mouse onto the householder's car.
The victims tell police they can think of no reason why they have been targeted and are becoming increasingly concerned.
Police said: "This has been a disturbing turn of events for the victims who are at a complete loss to explain why they are being targeted in the way.
"Not surprisingly, the incidents are beginning to have a psychological effect on them and they are desperate for them to stop.
"We take this kind of persistent criminal damage and anti-social behaviour extremely seriously and we want to reassure residents that we are determined to tackle this."
