The present investigation was carried out to evaluate the ixodicide effect of Neem Essential Oil (Azadirachta indica) in domestic dogs infested by ticks (Rhipicephalus sanguineus) that were admitted to the CASTIM Veterinary Clinic, through the use of a shampoo based on Neem essential oil. (Azadirachta indica) at two concentration doses of 20% and 30% and with its positive control Derrivante (Ethion¬ + Cypermethrin) at 10%. thus determining: the effectiveness of the concentration of Neem oil, the time range in which the ixodicide effect occurs after application and the comparison of the positive control Derrivante (Ethion + Cypermethrin) at 10% vs. Neem essential oil 20% and 30%. evidencing its effectiveness, promoting the solution to the problem presented by most dogs at the Coastal or Littoral region level. In this research projected a total of 36 dogs male and female patients were analyzed by non-probabilistic consecutive sampling significance level of 0.05% admitted to the Veterinary Clinic CASTIM in a period of four months, classifying them according to size, type of coat (short and long) and their habitat (inside and outside the home) as indicators in which the acaricide efficiency of essential oil of Neem both 20% and 30% with residual effect 15 days were assessed in addition to the commercial product have Derrivante (ethion + Cypermethrin) as a positive control. According to data obtained, Neem Oil 30% had a greater effect in relation to the concentration to 20%, demonstrating the degree of infestation of ticks declined significantly as at 5 observation.