Technical Abstract: Three vacuum devices were compared for sampling psyllid populations. One was an AC rechargeable, handheld, cordless model and a second was a handheld, DC model powered through a cord connected to a 12V vehicle battery. Each of these devices had a mesh cylinder (substituted for a dust bag) in which the insects were captured. The third device was a reversed leaf blower with a two-cycle gasoline engine with the insects captured in a standard sized aerial insect net. The DC powered sampler was tethered to its power source, in this case, a vehicle which could access trees in a commercial grove, whereas, the AC cordless device may be more suitable for dooryard situations. The sampling procedure consisted of vacuuming a target tree for 5 minutes. The mean numbers of psyllids captured per tree with the AC, DC, and leafblower devices were respectivey: 17.4 (n=44), 33.0 (n=72), and 96.8 (n=47). All mean differences were statistically significant. To test the efficiency of the leafblower, some trees were immediately resampled. The proportion of psyllids in the first sample compared to the resample was approximately 3:1.