A good seal between the Flexineb® Mask and the muzzle of the horse is important for correct airflow through the mask.

The aerosol mist in the chamber should empty each time your horse inhales.

If this is not the case check the exit valve is closed and try adjusting the mask to create a better seal around the horses muzzle.

If an Adult or Adult XL Mask does not create a good seal on your horses muzzle you may need our Mask Adaptor Kit to create a better seal.