This paper presents a laboratory test of the potential of using an albino strain of a common bluestain fungus to control bluestain in logs. In our initial studies, we tested an albino strain of Ophiostoma piliferum (CartapipTM). Cartapip and four challenge bluestain fungi were inoculated into test logs as a spore suspension. Two types of artificially produced bark wounds were inoculated on each log with the following: each fungus alone; Cartapip and each challenge fungus mixed together; Cartapip first, followed by each challenge fungus (2 and 10 days later); and the challenge fungi first, followed by Cartapip 5 days later. When inoculated alone, Cartapip was able to colonize fresh lodgepole pine, penetrate up to 2 cm deep into the sapwood, and not cause stain. The challenge fungi colonized large areas of sapwood and caused significant stain. However, when the fungi were applied after Cartapip, the stain was negligible in most cases. Based on these results, we believe that Cartapip has the potential to prevent stain under field conditions if it is applied immediately after felling.