Trust me, the worst offenders of "false alarms" are any high-end Nissan/Infiniti or Toyota/Lexus vehicle which seems to have the Laser Cruise Control active possibly even when the driver hasn't turned it on. 99% of the time my V1 signals a Laser warning, it's one of the above vehicles.
Those of y'all living in urban areas might have to deal with more laser traps, which do render radar detectors pretty much useless. However those of us in rural areas still have mostly radar speed traps. This certainly was the case in western MD and NC. VA uses almost solely radar as well, which is probably why detectors are illegal.