The present work aimed to determine and compare prevalence and intensity of ectoparasites infestation on dogs as well as their control by recent insecticides. For this purpose, a total of 94 stray dogs were examined for the presence of ectoparasites in Kalubyia Governorate during the period extended from March 2008 to Februray2009. A total number of 2964 ectoparasites were found corresponding to 5 species in 54 out of 94 examined dogs (57.45%). The collected ectoparasites were identified as 27.43% Ctenocephalides canis, 1.32% Ctenocephalides felis, 26.79% Trichodectus canis, 44.47% Rhipecephilus sanguineous and Sarcoptes scabiei var canis which infect dogs at 21/94 (22.34%), 5/94 (5.32%), 20/94(21.28%), 23/94(24.47%) and 3/94(3.19%) respectively. The mean parasitic intensity of ectoparasites was 54.89 and that of R. sanguineous was (57.3 tick/animal) followed by Tr. Canis (39.7 lice/animal), C. canis (38.71 flea/animal) ,while the lowest intensity was recorded in C. felis (7.8 flea/animal). The highest ectoparasitic infestation in dogs was recorded in spring (43.06%) followed by summer (33.33%) while the lowest percentages were recorded in autumn(13.89%) and winter (9.72%). Female dogs harbored higher infestation (74.19%) compared to males (49.21%). The ectoparasites infestation rate in puppies was 55.26 % and in young dogs 62.5% while in adult dogs (54.56%). Young dogs were infested by 4 parasitic sp. (C. canis, Tri. Canis, R. sanguineous and S. scabiei var canis) and puppies were infested by 3 sp. (C. canis, C. felis and Tri. canis) while adult dogs were infested by two sp. (R. sanguineous and C. canis). Superinfection by two ectoparasites was detected in 18 (33.33%) infested dogs. Both dipping of puppies in deltamethrin 0.025% or subcutaneous injection of ivermectin resulted in 100% reduction in the mean number of all fleas during the period extended from 48th hrs to 35th day post treatment. Deltamethrin also resulted in100% reduction in the mean number of Tr. canis from 48th hrs to 28th day post dipping.. Subcutaneous injection of ivermectin resulted in 6.67% reduction in the mean number of lice for 48th hrs post injection and 0.00 % after. It was concluded that, stray dogs specially puppies were infected by C. canis, C. felis, Tr. canis , R. sanguineous and S. scabiei var canis with higher infestation during spring. Fleas and lice were successfully treated by using deltamethrin dipping once in low concentration 0.025% which was more effective than ivermectin injection.