In Takumi story, some idiots who support "Yukkuri lives matter" apply method to prevent yukkuri core from death, even spraying drug can't kill them. Best way is feeding them with mold food, mold is the cancer for yukkuri (but human can cure it).
If you catch sight of house yukkuris, quickly use the "Yu-killing jet" before they run away!
In this way, they will surely meet their fate!
There is no way to avoid their dying screech despite being annoyingly noisy, though......Gepiiigiigigigigi!
(Screech)uu?!
Feelsh pwainful!
Eaji!
Yuuu?*Flap-flap**Flaaaap**Roll*Yu Kill*Spray*