Never had to deal with a rat problem, but lemme put myself in the shoes of someone who tried using cheap single-mouse traps and found they didn’t work. At that

Never had to deal with a rat problem, but lemme put myself in the shoes of someone who tried using cheap single-mouse traps and found they didn’t work. At that point I would google for the most effective poison (using some metric like time to death or LD50 per kg), check exterminator forums to see what they use as a last resort, etc. If the product is as deadly as promised, I’d give it a 5* rating and recommend it to all my IRL friends. Personally I’ve been burned by milquetoast products such as “eco friendly” cleaning liquids that just don’t work. Product with many warning labels that are clearly targeted towards professionals are so much more effective in general.