The sheep production industry is heavily affected by gastrointestinal parasites, responsible for significant stock losses due to their high fecundity and pathogenicity. The industry is further threatened by increases in destructive fire events. This study exposed ruminant gastrointestinal nematodes from egg to L3 stage to treatments of either raw soil, soil burnt at 200°C or soil burnt at 500°C. Burnt soil did not affect the egg hatchability, however adding soil to cultures decreased the number of eggs that hatched. The viability of nematodes at the L3 stage of life was significantly decreased after four weeks of incubation with soil burnt at 500°C.