Rats turn up their noses.
Upon hearing my ratty tale of woe, a kindly neighbor gifted me with a critter-friendly* repellent, with which I promptly saturated my kitchen. But I didn't stop there. I also doused my kitchen with essential oil of citronella. And again, I didn't stop there. I also sliced a bunch of onions and put them in my kitchen cabinets, cupboards, and drawers. All potent rat-repellers. Nary a scamper nor scurry since!
The rat trailer next-door still stands. A landscaping truck showed up over there this morning, but the workers didn't do anything that I saw. Word around the park is that the rat trailer will be leveled "soon." And my video cam is fully charged.
*Odd designation, I know. Safe for pets and human offspring. Also safe for humans and transhumans.