Which method is NOT effective against deer damage?

Low temporary barriers are not considered an effective method against deer damage because they often lack the necessary height and strength to deter deer from crossing them. Deer are capable of jumping over relatively low obstacles, especially if they feel safe and unthreatened. Unlike permanent fencing that can restrict access effectively, or motion detectors that can scare deer away temporarily, low barriers do not provide a reliable long-term solution.

In contrast, permanently installed fencing is designed to be tall and sturdy enough to keep deer out. Using motion detectors can also deter deer by creating sudden movements or noises that startle them. Planting deer-resistant varieties is a strategic approach that involves cultivating plants that deer typically avoid, which helps minimize the likelihood of damage in the first place. Thus, while low temporary barriers might provide some minimal protection, they are ultimately ineffective as a standalone defense against deer damage.