To download the pics I take my laptop into the woods, put card in computer, and put card back in camera, no chance of mixing up cards which I believe casuses some cameras not to work properly.
The main thing I do is my cameras come home during rifle season and I don't put them back out until July when I put the food plots in. I will not leave them out during winter, I think it is just way too hard on delicate electronics. And only having them out for 4 months hopefully gives me many more years of use than leaving them out all year long. I don't really care what the deer are doing in Feb anyway.
1. Insert SD card into PC. 2. Open windows explorer. 3. Find the SD card (usually comes up as Removable Disk and D or E drive. 4. Right click on SD card and click Format. 5. Under format options, Quick Format should be selected. Click start.
NOTE: Ensure all files you wanted saved off the card are saved before formatting. All files will be removed from the device when it is formatted.