>> (I dont mind killing the rats but i dont want to hurt the boxies)
EEK!
:::runs & hides::::
No seriously lol... we had a problem with woodrats under our house once. We bought lawn sulfer which is easy to find at any plant nursery in my neck of the sand because sulfer is a great acidifier for our alkaline soil.
The sulfer stinks, we put 50 pounds of it under the house which fortunately didn't come through into the house but it did make the rats move. Those rats have a burrow at the edge of our property next to the ally behind us now. We let them be as long as they are not near our house. They are food for the many gray foxes, coyotes, roadrunners that live here too.
I was very surprised by how well the sulfer worked & I really liked that solution because we didn't want any of the wildlife finding a dead poisoned rat & then eating it.
Another thought on that, if you poisoned the rats you'd have to worry about one dying where your turtles could get to it & ya never know the turtles might try to eat it, that would be terrible.
If sulfer won't work for you, you could try Have a Heart humane traps.
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PHRatz