Are you sure you missed the point? Are you really *that* dim?
The objection here is not necessarily the killing or this species of
animal,
but the methods used to kill. Any rational, normal human being, would
want
to kill quickly, and painlessly whereas you seem to want to cause the
most
suffeerring and seem not to feel any compassion at all for a creature
you
seem to fear or hate. This is simply not rational.

The point I am making is that the methods used to kill vermin are
unimportant. They are vermin, hence any death is better for us than
that they live. Get rid of them and good riddance. If they suffer, they
suffer. They make me suffer.
John