Ajayi, Folorunso A.2023-12-112023-12-112004-03-03Ajayi, Folorunso A. (2004 Department of Agronomy, Nasarawa State University Keffi)https://keffi.nsuk.edu.ng/handle/20.500.14448/3055Marauding rats and mice arc omnivorous feeders that cause extensive damage to household items, stored food and farm crops. Among the methods of combating them is the use of anticoagulant rat poisons to reduce their pestiferous activities. In this study, four anticoagulant rat poisons; Warfarin, Klcrat wax block bait, Racumin powder and Obud rat killer were evaluated at the rale of 10, 15, 20 and 25% live body­ weight of while albino mice under ambient laboratory conditions until mortality occurs. Experiment was carried out in a randomized complete block design of 8 X 4 X 4 factorial layouts. Results show that Racumin powder and Klcrat were significantly more effective than Warfarin and Obud rat killer in terms of the mean number of days that it took mortality to occurred in test mice. Mean number of days ranged from 10.63, 12.06, 27.69 and 32.38, respectively, for Racumin powder, Klcrat wax block bait, Warfarin and Obud rat killer. Also, there was significant difference between the amount of anticoagulant rat poisons ingested based on percentage body weight. From this study, it was concluded that in order to effectively control these marauding pests, Racumin powder anil Klcrat wax block bait will do better in controlling rats and mice within a shorter time than Warfarin and Obud rat killer.enAnticoagulant, Rodenticides, Racumin Powder, Klcrat wax Block Bait, Warfarin, Obud rats’ Killer, Rats, White mice, Rattus Norvegicus, Rattus Rattus, Mus Musculus.Article