When choosing a fly spray for horses with ulcers, the most important consideration is avoiding ingredients that can irritate the stomach or respiratory system, as ulcer-prone horses are often sensitive and may be on medication that affects their overall health. Our editorial team compared products based on safety, efficacy, and formulation to recommend sprays that minimize stress and chemical exposure, which are key for managing ulcers.

Horses with ulcers require a low-stress environment, and fly sprays that are gentle yet effective can help reduce irritation from pests without adding further discomfort. We focused on natural, non-irritating options that are safe around the face and suitable for frequent application, as consistent use is often needed in ulcer management.