Rats are pretty choosy/smart about what they eat, most "toxic waste" is not acutely toxic enough to kill rats before they birth several litters, and AFAIK no ro

Rats are pretty choosy/smart about what they eat, most "toxic waste" is not acutely toxic enough to kill rats before they birth several litters, and AFAIK no rodenticides are under patent (the most recent one, bromethalin, is a horrifying product of rational drug design optmizing for palatability and delayed action - still it was invented in the 1960s or something). So probably not in this case