The sapwood of ochoó (Hura crepitans) suffers from an oxidative stain that results in substantial loss in value, making it one of the most important utilization problems encountered among Bolivian timber species. Initiating kiln drying within 6 days of felling did not reduce staining of ochoó, although many boards with extensive interior stain had bright surfaces, so it is possible that immediate drying might reduce or eliminate discoloration. Shock treatments did not reduce staining either, except for the localized effects of surface hammering. Eighteen-hour treatment with a 5% solution of sodium metabisulfite reduced stain, although penetration was limited in many samples.