My wife has also used spray on oven cleaner in really soap scummy showers and it works wonders at cleaning up a fiberglass shower, so I imagine a sink it would work well too.  

I guess I'd shop vac and then spray it down with a product designed to kill mold, then cross your fingers and see what happens....Note: If you test it for mold and it comes back positive, you're opening a whole other can of worms.....

However, cat spray is a nightmare.

If you have not done so, use a garden hose to spray out the condenser coils/fins.

It's a less jarring transition into investing (emotionally and financially, haha). 

Anyone have any tips or any commercial spray or anything that could help!?

They forward me the quote which she said she never got, and it was for $360 for sealing the entry points, placing traps, spraying repellent, and a 3 month repelling contract (1/month) around the outside of the house.

I’m pretty sure I’ve got a few jars of moon shine in the attic of one of mine.

So my now aggravated maint guy spray painted the entire box including the names with flat black Rustoleum.  

If you can't find a marking, and you really want to know, use a bucket and a stopwatch.A couple of things to look out for: some of the low-flow heads don't give you a very strong spray.