In 2005 and 2006, we conducted a study in two steel bins containing wheat in order to develop a sampling plan for psocids. Bi-weekly, in each bin, four samples of wheat were taken from the bin center and in the north, south, east, and west directions at 0.15 and 0.76 m using a 1.2-m open ended trier. One week prior to taking grain samples, three 8.9 x 12.7-cm corrugated cardboard refuges were placed on the hatch of each bin. Psocids in grain samples and refuges were identified and then counted. In 2005 and 2006 we found only Liposcelis entomophila and L. decolor, respectively, in both bins. We found that psocid numbers in refuges were correlated with those in grain in both 2005 and 2006. We then used this information to develop and validate a sampling plan for L. entomophila and L. decolor in steel bins containing wheat.