I understand that as a grain farm we need to control rodents, but I had a pet rat when I was a teenager and can't help feeling sorry for them (even though I know wild rats =/= tame ones.)
My husband insists it's painless. He says they eat it, and it causes painless internal bleeding, which eventually causes them to lose consciousness and die. He says it's just like they go to sleep.
I'm still not convinced. :\ What do you think AMA?