The purpose of this research project was to determine knowledge of the Rhipicephalus microplus tick among seventy cattle ranchers in the Caçapava do Sul and Lavras do Sul municipalities in Rio Grande do Sul State, through completing a structured questionnaire. The replies to the questions on the land areas covered by the properties show that 27%, 26%, 21.5%, 20% and 5.5% cover more than 500 hectares, between 150 and 300 hectares, between 300 and 500 hectares, between 50 and 150 hectares, and under 50 hectares, respectively; 75% of the ranchers are raising more than 100 head of cattle; 84.3% have cultivated grazing pastures and 15.7% have only native grasslands; 87.14% of the ranchers rated bovine babesiosis as the main tick-borne disease, and 76% checked out tick control products recommended by veterinarians. They mentioned 13 formulations and/or associations of tick control products. The tick control biogram test is a new tool for 58.6% of these cattle ranchers. Producers use late control, based on tick control chemicals.