I have 7 covert black opps in the woods they work great. I have my set for max 30 pics a day which keeps me at about a 1000 a month for $10. The battery life is ok about 2 months. I am testing a solar charger on two so far in a little over a month my batteries are 100%. IMO the gas savings to check cameras and not having to disturb the area by checking cards is well worth the price. If your a turkey hunter this is a must have you can truly pattern the birds, example if every day between 4pm and 6pm birds show up in the same everyday you know they are roosting close.