The campaign has not only helped reduce clean-up costs and provided a cleaner environment, but has led to a number of prosecutions. Images from hidden cameras and public information have helped these cases.
Illegal dumping enforcement officers are now deployed in the four district council areas, building on the message that illegal dumping is anti-social and a criminal act that is not acceptable.
The maximum fine for an illegal dumping offence is unlimited and offenders can receive a maximum two-year prison sentence.
Joint waste committee chairman Margaret Dewar said: While this drop in flytipping incidents is to be welcomed we must all continue to bear a responsibility for reducing the problem of illegal dumping.