A very nice previous answer, but completely off topic.
Raw sugar from cane is delivered to processing plants usually by sea transport, a lot of rats live on these ships, which feed on raw sugar. They are, of course, poisoned, but not with arsenic but with strychnine. Traces of strychnine can be found in sugar obtained from raw cane sugar. In principle, strychnine can be detected at inbound or outbound controls by phytosanitary controls or by a laboratory at a processing plant. But due to the corruption of our control system, I can assume that sugar with strychnine gets to the consumer.
Cane brown sugar is obtained from the juice of the plant Saccharum officinarum (sugarcane).
There are several varieties of cane sugar. It depends on the area of its growth:
Real cane sugar grows in the Caribbean, Central and South America, India, Australia, Central and South Africa, in the southern part of the United States, as well as on the island Mauritius and the Pacific Islands. Unrefined cane sugar when transported on ships can be stored in violation of storage conditions, when rat poison is placed between the bags of sugar, including arsenic, the vapors of which can get inside.
Frequent fakes of cane sugar have been noticed. There are two ways to distinguish fake from natural sugar at home: