I had two 100's and Both were defective. Each would drain a disposable battery in a day. They were from Walmart. I got a 200 model and it works ok. I also have the rechargeable battery and the solar pannel for it. With that it will work for two to four weeks. Every once in awhile it will have an electrical goof up and the best thing to do is remove the battery for a bit and then reset it.
Moultrie has their new models set so there has to be something infront of it for over a whole minute before it will take a picture, it is called the sureshot? Go to
www.ChasinGame.com and read all about them in the forums.