*edit: it's taiyaki, not teriyaki, should stop mixing them up* Well it depends, if this was done on purpose for abyuse, or if it's a trap meant to capture home invaders.
After all, having the taiyaki plate surrounded by yu-motel sticky floors would be a very intelligent thing to do if you don't completely trust your fences and windows for keeping the yu's outside, like the last line of defense or something.
Though I can't help but think that, because of the mister's trollish way of speaking, this maybe for abyuse. It's still is an interesting anti home invasion method, at least as the "last line of defesense".
There usually are painless solutions - hospitals stock solutions for even superglue - but they aren't worth it.
Yukkuri will be healed instantly with orange juice, in comparison to humans who might take weeks to regenerate even a square inch of skin. Furthermore, their memories aren't perfect (to say the least), so they probably will forget it in some time.
In other words, simply pulling the yukkuri instead of going perhaps miles to find a neutraliser (I don't think people keep anti-glue in their homes) is, in context, much more merciful than leaving it there to starve.
Spoiler: The anon leaves the Alice outside, but at least he leaves it a fighting chance (maybe) instead of killing it directly.