Eventually, I stuffed some steel wool into the crack and I'll go back there in a week or so with a bag of concrete and a tub to make a full-on tenant-satisfaction pantomime out of filling that crack and protecting her against the terrifying concrete-tunneling squirrels.

Big One 275tc white sheets from Kohl's are also awesome. 70/30 Cotton/Poly blend.

Cotton fields are turning to neighborhoods are fast as they can dig them up.

I have replaced some and it looked like it was stuffed with rusted steel wool.

Once your Buyers cotton on to your deals not being cheaper than they might get from any Agent, you're out!

Alex Cotton I agree with your methods.

The sound dampening I did was very effective and included the following:- rock wool insulation- acoustical putty pads on the backside of the electrical boxes- mass loaded vinyl- 2X sheets of 5/8” drywall with green glue in between the drywall- acoustical caulk on all remaining seams

The wool is over many eyes unfortunately. 

Wipe surface with TSP (1/4 handfull in 1 gallon bucket 3/4 filled water) using cotton rags (real cotton, not the non-absorbent stretchy stuff.)Dab latex (paintable) caulk or toothpaste into nail holes with finger (very tiny amount to just slightly fill the hole) wipe with dry finger, palm of hand or rag.When dry if there's still a sheen when viewed at angle then lightly "scuff-up" surface with 400 or 600 grit sandpaper wrapped around a 1x3x6" sanding block in long vertical sweeping motions.

____Here's a message to you Maksym:Here's the catch My-Skam, if you believe you can still pull the wool over anyone's eyes by piecing your project together via trying to finish either of your games and think that's going to justify your squatting and stealing money from Cory T.