Arena surface materials that generate respirable dust pose significant respiratory welfare risks to horses working in indoor facilities, with dust suppression and material choice critical for lung health.
Respiratory disease from arena dust exposure is cumulative and progressive - horses worked daily in dusty indoor arenas accumulate lung damage over years. Early stages of dust-induced airway disease are often subtle, with reduced exercise tolerance mistaken for fitness problems. Prevention through appropriate surface selection and consistent watering is far more effective than treating established respiratory disease. Facility managers and horse owners have a shared welfare obligation to maintain indoor arenas that do not damage the respiratory health of horses using them.