Winter canola (Brassica napus) is used as a break crop in the primarily cereal grain rotations of the Pacific Northwest (PNW). Research over the last 40 years has largely been focused on grain production. However, renewed interest in using canola as a dual-purpose crop has recently emerged. Work at Washington State University (WSU), the University of Idaho (UI), and in the Southern Great Plains has begun to illustrate the challenges and potential of dual-purpose canola. Canola forage has high protein (15–25%), low fiber, and very high moisture levels (85–90%; Neely et al. 2015). Canola can also accumulate levels of nitrates (Zhang et al. 2005) and sulfur that are toxic to ruminants. Ensiling has been shown to reduce levels of nitrates (Kincaid et al. 2012) and sulfur-containing compounds (Fales et al. 1987; Vipond et al. 1998), and allows forage to be preserved at a relatively high moisture content compared to haying. Unfortunately, the high moisture content of canola can lead to poor fermentation results and high amounts of effluent (an environmental pollutant; McDonald 1981). However, absorbents can be used to reduce the overall moisture of silage, improving fermentation and reducing effluent losses (Fransen and Strubi 1998).