the industrial area of AssiutCity, in order to survey the rodent species and study the population dynamics of the rodents allover the year by using the food consumption method. The use of anticoagulant rodenticides for controlling rodent species was also possible.
     Data cleared the presence of three rodent species captured from  the studied area. The first one was the white bellied rat, Rattus rattus frugivorus represented by 58.0% from total rat captured; the second species was the grey bellied rat, R. r. alexandrinus with 33.0% and the third species was the Nile grass rat, Arvicanthis niloticus with 9.0% from the total population.
   Study of population dynamics showed that, high population of rodents was observed
during spring with 39.36% followed by autumn 23.0% and the lowest population was counted during summer and winter with 18.9% and 18.6%. The same trend was recorded when using food consumption method in order to study the occurrence of rodent members in the studied area.
     The use of anticoagulant rodenticides in control rodents in the studied area resulted of 84.8% reduction in the total of rodent population when used these materials twice as compared   with the untreated areas or the using of these materials one time treatment only