I use a mix of live traps, fenn-type spring traps and bait boxes. I find the bait is best and in proper boxes it is never accessable to non-target species. Tomcat2 and Romax difenacoum are my alternating preferences at the moment.
Eradibait is a complete waste of money from personal experience and from many others who have tried it. I understand dehydrated sugerbeet (as sold for horse food) is a much better and cheaper option, put a tray of the sugarbeet down inside a building somewhere keeping it dry, make a water source available outside the building. Theory is that the rats eat the dry sugarbeet and then go outside to get a drink, the moisture inside the rat makes the sugarbeet re-hydrate swelling up as it does so
Guess what happens to ratty when the beet swells too much
Bantam Lakenvelder, Vorwerk and Dutch, large fowl Appenzeller Spitzhauben and Sussex and now Fayoumi