Is it poisonous and I keep finding them in my house?
Amaurobiidae I think, doesn’t have the pronounced chelicera I would normally expect from Dysdera sp.. Perhaps it is Callobius or Metaltella simoni but hard to say for certain.
They are not dangerous.
Hi, welcome to Spider ID. 🙂 This is a Wafer-lid Trapdoor Spider (Euctenizidae), should be Myrmekiaphila comstocki based on location. It’s a wandering male in search of a mate. You shouldn’t be finding them indoors, you can reduce the number of spiders you find in your home by sealing cracks around floors, doors, windows, foundation, etc.
Like most spiders they have venom but are unlikely to bite except in self defense and are not considered to be of medical concern, everyone’s immune system is different though.