Businesses take a wide range of green initiatives. One of the most common examples is the act of "going paperless" or sending electronic correspondence in lieu of paper when possible. On a higher level, examples of sustainable business practices include: "refurbishing used products" (e.g., tuning up lightly used commercial fitness equipment for resale); "revising production processes" to eliminate waste (such as using a more accurate template to cut out designs), and choosing nontoxic raw materials and processes. For example, Canadian farmers have found that hemp is a sustainable alternative to rapeseed in their traditional crop rotation; hemp grown for fiber or seed requires no pesticides or herbicides.