I've never really felt awkward about killing mice and other pests. I get that some people do, but it's not important to me.
For the bait I've been using pre-baited traps. I know this must sound pathetic but, the bait seems to work really well and it lasts for 6 or more mice so it's not an outright waste.
Dealing with previous infestations I've found that a range of strategies is best. Traps & poison, different brands. If you only do one thing they seem to wise up.
If I have to go back for more traps I might try chocolate, thanks.
Really great news.
These success stories undermine the conservative narrative that renewables are expensive and unreliable.