Check out the diseases that occurs in your area and use this product if it covers what you need protection from. I would rather use a 5-way plus West Nile for the area that I live in. This product does seems to work very well though

Pros: 4-way protection

Cons: does not cover all diseases

Another yearly maintenance staple. Protects from strains of the flu,sleeping sickness and tetnaus. Must do once a year along with the booster, two weeks later.

Pros: works

Cons: requires booster

This product is what I use to vax. my horses. I have not yet(knock on wood) had a horse have an advers reaction to this vaccine. The only downside is that for horse owners who are inexperienced at evaluating their horse's health, they miss out on a vet visit if they give the vaccine themselves.

Pros: self-sufficient

Cons: no vet