How long after using ammonia will the fleas die?

Fleas typically begin to die within a few hours after exposure to ammonia, as it is toxic to them. However, the effectiveness can vary based on the concentration of ammonia used and the specific flea life stages. It's essential to ensure that the area is well-ventilated and to follow safety precautions when using ammonia. Additionally, treating your environment thoroughly is crucial for long-term flea control.