@Texas Kiki
Thank you! I'll look into rigging up some sort of trap box that the chickens won't be able to get into. And maybe grab some mouse repellent. I'm pretty sure the mice chewed off some Sussex and Wyandotte feathers over winter- some of their back feathers had been "Mowed" to about half length and I found the other half lining the mouse nest.
Will get the spray later on today! I have a Bonide Permethrin Dust-On Powder, but heard that the dust could cause repository issues. Would that be good to treat the dirt floor of the run with, or if they rolled in it would it cause an Over Dose? Also, is there an Egg Withdrawl with Permethrin? Some things I read said yes for 21 days and others said there was no need

. We finally got up to 10-7 eggs a day after a winter of 2-4 eggs

!
@Wyorp Rock
The spot under the Brahma's vent in that pic was solid, dry, and crusty- I just got the phone out after she was sprayed a tad excessively. She's rather flighty so I wanted to get something on it before she squirmed away. I Blu-Koted it after the pic, (And accidentally dabbed her vent too

. Hence, blue eggs.) I'll see if I can maybe wipe her and get another pic when we spray her with Permethrin or Pine Tar her. I'd trim up her feathers, but they are giving her some coverage right now.
I'm thinking that I could potentially get some sort of fencing to wrap around the coop and keep the Wyandottes under that. I'd just have to rig up some sort of access door to get water and food to them. Hmmm.