If you have a horse that is a sneaky Houdini, these straps by Green Guard may help with this. Use this strap between the halter and the muzzle corner to keep the sneakiest Houdini from getting their nose over the muzzle.  

Feature:

• Lightweight, adjustable hook and loop straps.
• 8" max strap length from muzzle to halter
• Can be trimmed shorter if needed.
• Two straps per package