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Show I and begin to walk with a slow j and measured gait. After sev-I sev-I oral days, without suffering, they die of internal hemorrhage. hemorr-hage. Other rats are not warned of the poison by the dicing rats. There is no dash for water, there are no convulsions, and the bait then remains effective to keep stray rats from again populating the area. One major advantage of Warfarin War-farin rodenticides is their relative rela-tive safety. Since this chemical relies upon cumulative doses for results, there is little chance that enough bait will be taken liy humans, pets or domestic animals an-imals to causa serious poisoning effects. Out of several hun-'dved hun-'dved nation-wide tests made on Warfarin, no case of accidental human poisoring has :n rc porter, the extension entomologist entomol-ogist indicated. NEW RAT KILLER IS SAFE FOR PETS A new rat and mouse killer is now available to the general public, reports Dr. George F. Knowlton, extension entomologist entomolo-gist at the U S A C. It has been hailed as one of the safest poisons pois-ons to use, from the human standpoint: also, it holds promise prom-ise of wiping out the entire rodent .population completely. "Warfarin" is the name of the new death-dealing substance. It was developed at the University of Wisconsin in the laboratories of Prof. Karl Paul Link, and is now available through rodenti-cide rodenti-cide manufacturers. Warfarin is tasteless and odorless: also, it is slow acting and relies upon the cumulative effects of small quantities consumed con-sumed over a period of days. Rats taking the poison show no immediate effects. However, they eventually become drowsy |