Species of the genus "Scaptotrigona" have very large colonies, with up to 20,000 individuals, and can produce from 8 to 12 liters (2-3 US gallons) of honey a year, but they are somewhat aggressive and thus not popular among Brazilian meliponine beekeepers. Some large breeders have more than 3,000 hives of the tamer but still highly productive species in the genus "Melipona", such as the "tiúba", the true "uruçu", and the "jandaíra", each with 3,000 or more bees per colony. They can produce over 1.5 tons (3,000 lbs) of honey every year. In large bee farms, only the availability of flowers limits the honey production per colony. Their honey is considered more palatable because not overly sweet, and it also is thought to have medicinal properties more pronounced than honey from bees of the genus "Apis" due to the higher level of antimicrobial substances. As a result, the honey from stingless bees returns very high profits, with prices as much as 5-10 times greater than those for the more common honey produced by European or Africanized bees. However, much larger numbers of beehives are required to produce amounts of honey comparable to that of European or Africanized bees. Also, due to the fact of those bees storing honey in cerumen pots instead of standardized honeycombs as in the honeybee rearing makes extraction a lot more difficult and laborious.