Do they allow cow bells inside Alamodome for high school football games?

Yes

I was there for a band competition. Im not sure if i heard any or if they are allowed. Website tells items not allowed.

Probably Not...

I'm pretty sure they do

No backpacks, purses (small clutch okay), food or drink, and nothing that could be a weapon... If you don't care if the cow bell gets confiscated (and thrown away), then try to take it in... otherwise, leave it home.

No

They are against UIL rules.

Not sure

I have seen them in there but I don't know if they're allowed