The effect of garlic as an antiparasitic in backyard chickens was evaluated in two forms of supply: eaten and eaten. For the form taken, 5 g of garlic were ground and diluted in one liter of water and offered as the only source of drink for a period of eight days to a group of 10 free-ranging backyard hens. For the other form (food), the bulbs were fragmented with a cutter into portions of 1, 1.5 and 2g of garlic, each fragment was provided directly to the beak to a group of ten birds placed in individual cages, for a similar period of eight days. A coprological study was carried out on the hens of both forms of supply, through the flotation method, the free-ranging hens were sampled on Day 0 and 9 of the treatment, while the other groups (1, 1.5 and 2g), as well as well as the control, they were sampled on Days 0, 3, 6 and 9 of the study period. The most relevant results indicate that 100% of the sampled birds were positive for parasitosis, the parasites diagnosed were Ascaridia galli and Eimeria spp. The concentration of eggs and oocysts was reduced to 0% at the third, sixth or ninth sampling in the control group, 1 and 1.5g, respectively. Therefore, it is concluded that garlic, both crushed and loose in water, as well as the fragmented bulb, directly to the beak, was effective as a natural antiparasitic against Eimeria spp. and Asaridia galli, in Creole backyard chickens. However, in the drinking water it turned out to be the lowest dose and with less handling of the birds.