D-Con was invented for times like these.
It’s not ‘nice’, but it is affective against small pests.
Just resist the temptation to blab all about it on Social Media.
Bromethalin, like in JT Eaton 750 is potent (one time feeding) but some will not eat it, unless you grind it up and mix with peanut butter.
That seems (pray God) to have work with mice in the basement in this city, despite filling many holes. Mice were so smart they would not step in sticky traps, and even flipped a spring trap over to get the food without getting caught. The ate the Diphacinone based poison like candy.
See table of different poisons here: http://npic.orst.edu/factsheets/rodenticides.html