Can you help me ID this arthropod?

My assistant - who’s beginning to read here - has this issue with a millipede or whatever in his yard. We don’t know what it

The offending arthropod

They’ve gone from one to 50 or more over the last weekend. Can you fine people be the pride of the dope and identify it for her? And provide advice? Fight back? Flee? Something in between?

Location: coastal South Carolina northwest of Charleston.

It looks like a Greenhouse millipede.

15 minutes. Pretty good, guys.

Sometimes at night after rainy weather I get hundreds of these climbing all over the exterior of my house. And once I found a tight clump of hundreds of them gathered together on my porch–possibly some type of borgy?