Many tianguis have problems in the neighborhoods they occupy. These events are accused of “devouring” streets as regulated and non/regulated ones grow and multiply. The main problem with tianguis is that merchants spread out their wares over sidewalks and other public spaces beyond where they are authorized, blocking pedestrian and vehicular traffic. These places can measure four by four meters on city streets. Monterrey Street in the Del Valle neighborhood of Mexico City is cut from six lanes to three lanes on tianguis days. Another problem is that they block scarce parking space. Residents complain about noise and odor. Lastly, at the end of the day after the stands are taken down and brought home, tons of garbage is left behind, and in areas where market activity is frequent, infrastructure such as light poles and sidewalks are damaged.