we use them year round as we have a lot of exotics that means there will always be something carrying horns. As for where, depends on the time of year, right now we have them on mineral/protein feed sites that we don't hunt. Last week I put one on a live spring I found in a draw about 100 yards in the brush from my main hunting site. I am expecting to see some good animals there as it is starting to get warm and we don't have a lot of water on the ranch, so this live spring should be a good spot. I also hung a stand there last week....During season I will move them around to new trails or scrapes/rubs......