Can you please make a very slightly longer to cover the mouth? My dog is an amazing scavenger, I've tried a lot of different things to stop him eating random food that upsets his stomach. Where we live people are neglectful or think throwing away random food is good for animals.

I got this for my dog. It annoys her a bit but I'm hoping she'll get used to it. https://www.amazon.com/dp/B0BF5C9VTY

You can do that with a standard muzzle