Such chemicals are second only to medical drugs as a cause of poisoning (MMA, 2010). A study revealed that 36% of food samples in 2011 and 29% in 2012 contained unauthorised pesticides and/or exceeded allowable amounts of pesticides (ANVISA, 2013). The latest national agricultural census showed less than 2% of farms producing organically in 2006, 82% of which were family farms that might have used chemicals if they had had access to them (IBGE, 2012b). In 2014, about 7 200 registered establishments produced certified organic products (MMA, 2015a), or about 0.1% of total farms and less than 1% of agricultural land area (Figure 4.11).