Several studies have evaluated the contamination of cutting boards, as well as issues related to the material used in the production of these utensils, and the ease of cleaning cutting boards. In a study conducted by Ravishankar et al. (2010), the rate of transfer of Salmonella enterica from poultry to lettuce handled with knives and on plastic cutting boards was studied under different scenarios. When utensils were not cleaned after they were used, the transfer rate was 1.25% from poultry to plastic and 45.62% from plastic and knives to lettuce.