Anyone had much luck doing this? What calls? Are kitties a problem when calling?

I've been thinking of trying my cow call or maybe a pretator squeeler. Do they respond to this technique very well? How long and how often should you call?

Just missed getting a shot this morning 250 yards on a flat out run in the brush. 1 minute earlier and I would have gotten a look at him in the wide open. Was hunting South of Mt Ranier.....not much sign except for where I saw the one.