the surfaces of the steep paths typically found in favelas tend to become extremely slippery during rain, which makes it unsafe for visitors to attempt to leave, unless the exit is in close proximity. special attention should also be paid to walls as rusty nails, unfinished wood and other sharp objects can protrude, it is therefore particularly important to stay up-to-date with tetanus shots.

favelas often have both wild and vagrant domestic animals wandering about. it is not uncommon to see dogs, cats and chickens wandering about freely. in certain favelas, depending on their location, wild critters, insects and reptiles are also common, including venomous snakes and scorpions. it is best to avoid all animal interaction in favelas. it is particularly important to refrain from feeding or calling the attention of any dogs that may have been trained as guard dogs.

in summation, visitors are encouraged to be aware of their surroundings and seek guidance from a trained local. a hat and cream against sunburn, insect repellant, closed-toe shoes, and bottled water should be on everyone's list of things to bring into a favela tour.