Toxocariasis is a common zoonotic parasitic discase, Causing many problems in human beings especially children. Studying the prevalence of Toxara among dogs and cats in Cairo and Giza revealed infection rates of 14.6% and 5.2% in dogs and cats by faecal examination respectively. Adult worm of Toxocara were present in 18.75% and 7.4% of examined intestinal samples of dogs and cats respectively. Soil samples were collected from different public parks proved to be the major Source Of infection, where Toxocara eggs detected in 13.8% of examined samples. Five available chemical disinfectants varying in Composition Were tested for their lethal effect against embryonated and non embryonated Toxocara eggs The results indicated that 5% ammonia solution has a strong ovicidal activity against toxocara  followed by phenolic acid, lime, formalin and betadine solutions. The significance of Toxocara infection for human health was discussed.