This rat trap anyone can build. You make it once and it catches many rats.
A bucket, some peanut butter, a pipe and some water. Yup, that’s pretty simple.
One improvement suggested by someone using this trap is to add antifreeze to the water, which instantly kills the rats.

So you CAN make a better mousetrap!
Antifreeze is a slow agonizing death. Not instant.
Just call a pro and be done with them
Pretty sadistic
Just set out a bowl of soda pop mice or rats love to drink it but they can not burp so they die from the gas
the anti freez just takes out the kidneys and not very fast
and you dogs might get to it and die
Need few around the city’s alleys
But how do I get it to the congressional building in Washington DC?
Have done this for years but a little simpler and very effective just putting peanut butter around the top inside bucket halfway water and a plate that’s it