I live in Arizona. These have been coming out in the evening. They are 1-2” long and looking like really skinny earthworms. I took it to the local pest supply store and they had never seen anything like it.
Update: my pest control company had never seen anything like it. They sent some examples to ASU to identify. Turns out they are a type of millipede. Very uncommon in this region.
About 27 years
Sounds like a climate change symptom, then. We’ve got a lot of critters here we never had before. And a lot are gone we used to have. Well, ok, mostly the latter. But some of the former too.