In this talk, I will discuss the studies of cosmic homogeneity using multi-tracers as researched by the Renoir Team. I will give a brief summary of the standard phenomenology. I will present briefly the cutting edge telescopes that the team is actively involved in via instrumentation, methods and data processing. I will concentrate in the description of the two-point statistics and the fractal dimension of these multi-tracers. I will present results with these estimators in redshift bins that range between 0.15 and 2.2. Finally, I will conclude and give some outlook.