Syrian woodpeckers (Dendrocopos syriacus) damage plastic irrigation pipes in orchards and telephone cables by drilling holes in them. The aim of this study was to find a method to prevent such damage. The work was carried out in four localities along the coastal plain of Israel. A continuous follow-up showed that damage was minimal during winter and rose sharply towards summer. A collapsible irrigation pipe which inflates only when water flows into it was found to be inappropriate because holes were drilled in it. Yellow-painted pipes were found to have a deterrent effect on woodpeckers in that no holes were found, whereas the damage in the control pipes was maintained and followed the regular annual pattern.