If you're not washing your avocados before prepping your guacamole or toast, you may want to reconsider. A new report from the US Food and Drug Administration revealed that avocado peels can contain bacteria, including listeria and salmonella.

The report comes from a two-year assessment of avocados that was conducted to determine the prevalence of bacteria on the produce.

While listeria contamination was minimal on tests of the avocado fruit, the bacteria was more prevalent on the skin.