Invasive wasp adds sting to end-of-summer attacks

This SF Chronicle story sure sounds alarming:

In August, 345 wasp nests were removed in South Lake Tahoe, more than anyone can remember. That’s compared with 232 nests in August 2012, said Karen Bender, the supervising environmental health specialist for El Dorado County…whose department is averaging 10 complaints a day about rampaging wasps. “I’ve been to several picnics lately, and they just come out swarming…

However, I haven’t noticed much of a problem.  But then I put out yellowjacket traps in the spring to stick it to the colonies when they’re in the early, vulnerable startup phase.