Also please remember you are not allowed to place a snare at the entrance of a burrow.
When looking for a run, check wire fences, its easy to see where the vegitation has been flattened by constant use. Check that the run is in use (look for fresh tracks and spore), Its no good setting a snare on an old run.
It may be worth blocking off other runs and gaps in the fence to increase your chances of success.
And remember.... the more snares you set, the more likely you are to get a catch. No point in putting out 1 or 2.... If you want to eat, set 20+
If I think of anything else, I'll post more.
Ed