Red or Grey Fox? you haven't said which species
K5865 says- The places are pressured and are called very often. I need to figure out how to be able to hunt the areas and still have success...
That will be tough if you have limited hunting territory. And that's the toughest type of calling. I suggest you move to fresh territory and get into other family groups that aren't pressured. Studies have shown that half the Canine harvest is taken in the first three weeks of the season. So you are dealing with less Canines, pressure from other callers and educated Canines at your spots...time to move and find some young and dumb ones. A large territory is needed to maintain a constant success rate during the season. By that, a spot goes dead (in your case, over hunted) you will still have more territory to work. Don't waste time trying to 'be the man' to poke a smart one, go kill a dozen young ones. Possibly coming back later in the season to 'play' with these fussy Canines, when you have time.
If you only have a small territory, limited yourself and this is happening on all locations, re-read the replies from others and try their advice.
K5865 says- I have other areas I hunt and I know there are coyotes and fox there. Just can't seem to get them to come in.
Reds or Greys?
Tell us more, your other areas...are they pressured? What problems are you having at 'other areas'?
Maybe we can help...