Distribution of Toxocara spp. and other geohelminth eggs in the soil of different populated areas was examined and the role of earthworms and soil texture in transmission of the eggs under natural conditions in the Poznan (Poland) region was studied. Toxocara spp. (10%), Trichuris vulpis (6%), Ascaris spp. (4%) and Trichuris spp. (1%) eggs were recorded in the examined localities. Among the sites studied in this report the eggs of Toxocara spp. were much more numerous in the soil of an urban area than in rural villages and the contamination of backyards in the center of the city was the worst (61% positive samples). It appeared that apart from sandpits and playgrounds, flowerpot's soil is an uncommon source of infection for children. The relationship between soil texture and number of positive samples on the areas examined was indirect. Under natural conditions living geohelminth eggs were carried with earthworm castings from deeper layers to the surface of the ground up to at least 1 year after its contamination.