RE: do salt blocks work well?
 

Salt is a nessecary in their diet, however interms as the only attractant to an area I don't think it will have that great of an effect as they have already found natural sources of salt. If used in conjunction with other sources or good set upssalt will not hurt either. I would also suggest granulated salt poured out over the ground then diluted with5gal ofwater to start the leeching process, in time rain, snow etc will aide in the leeching effect.