Insect and Spider Identification: Please help identify this insect, 1 by Igremk

Igremk wrote:
There are a bunch of these crawling into my shop, probably through the front door... I\'ve killed so many of them that I noticed that if you try to step on them and fail, they either run for the edge of the wall first and THEN freeze and not move... or they just freeze in place right away, probably some feign death defense mechanism lol. They\'re like double/triple the size of normal small ants, like 1cm / 0.5 inch in length. I\'d really appreciate it if someone knows what they are, thanks a lot