A friend has a Bushnell Trail Sentry model 11-9000 and I tried to use it this past week. So far got a pic of a cow and nothing else dispite the fact that there where fresh deer tracks right in front of it. Also it only takes a pic of me once in a while when I walk infront of it but gets cars passing on the street all the time when I set in looking out at the street. Are these things crap or is this one bad and should my buddy take it back? He just bought it new this month. Thanks.