From Newsgroup: rec.gardens
The cement and flour or maize meal mix works very well. when the rodents consume he mix and the drink water the cement powder hardens and there for kill because he guts can no longer function. Because of the way it works the rodents do not seem to relate the mix with death as they do with many poisons or snap traps. An effective way to bait is to put the bait in side old car tires and lie flat on the ground with a cover over so cats and dogs cant get to it. Place several tires around the property. The tires will keep the bait dry. The city municipality were I came from used to do this all around the city and it seemed to work very effectivly.
--
For full context, visit
https://www.homeownershub.com/maintenance/flour-cement-powder-rat-poison-queries-617335-.htm
--- Synchronet 3.21a-Linux NewsLink 1.2