Does anyone else get annoyed at having to take care of their skids?

My DH has sole custody from two different losers BMs, so when he is constantly working and I'm taking care of his two kids, plus our son, I get annoyed. I get annoyed when I ask my skids to pick up their dirty socks they leave all over the house, yet I am still constantly finding dirty socks all over. I guess the stuff that mainly annoys me is the things I am repetitively asking them not to do to make it easier on me. We have a 4,200 square foot home and I am OCD, so cleaning this place is a bitch! They are pretty good and respectful, and I suppose leaving your crap all over the place is part of being a kid, but it should not be me being the primary sole custodian for two children who yearn for their BMs. It should be their mothers cleaing up after them, doing their laundry, and all the stuff that goes into taking care of a kid. I guess that's why I get annoyed because I feel like I shouldn't be the one doing all the care for them.

I want and need an attitude change about all this. Somedays I'm pretty good about it and don't let it bother me, but for the most part I get so pissed about having to pick up after them and pull dirty underwear from my SD inside out pants while doing laundry. I don't mind for my own kid though!

HELP!

And please keep it inspiring and helpful. I am trying to get away from being negative and a cold hearted bitch. I'm pretty good at that on my own, but I'm sick of feeling this way!