I put out 17 or so plaster bombs and all but 5 were taken. I also trapped 3 in traps over the weekend.
They took a hit but I'm sure they aren't gone yet. More plaster bombs going out tonight.
I'll be trying the plaster/peanut butter method in the next day or so myself. I set out traps last night with only one sprung- no rat and they ate all the peanut butter. I think I counted at least 5. Not good.