re: Rat problem

Clear out any places for them under structures like wood pile .. old decking etc..

Get rid of this one???.. snap trap.. poison blocks… if leaving poison in yard buy the little dog proof / kid proof container you place them in ..
poison in the kid proof container is best option and put it out there .. they eat the poison and it will make them thirsty until the die.. so the look for water.. it is by design to make them leave your house in search of water.. I doubt they will leave you backyard to go into your house wall to die..