Corinne has success with Breathing Duo - Air + Bespoke
Using a Breathing Duo - Liquid Air plus a Bespoke supplement between April and September makes our summer enjoyable.
I use the Air product anytime from now until the end of September. I tend to use it before riding, when the pollen count is high. I use my breathing bespoke from April to September daily. It prevents my pony from having breathing issues during exercise.
Best wishes,
Corinne.