We’re still getting calls about ants with every shower. This great article about a 2001 Stanford study of 69 California households explains that bug spray and ant baits simply won’t stop them. The culprit is weather: The study concludes that ant “abundance is highest in winter when the weather is cold and wet, and there is a second, smaller peak in the hotter, drier part of summer.”
The article goes on to discuss the ecological impact of the Argentine ant that has successfully invaded California. Among other impacts, the Argentine ant has decimated native ants that are a food source for the native horned lizard found in the San Diego area. The Argentine ants are so successful in part because they do not fight among their own species but rather treat other Argentine colonies as part of their extended family. Hmm, maybe a lesson there for our human species…