I seldom leave mine in the same place for more than 3-4 days. Average 100-150 pics ontrails, 250-300 orso on licks in that time period.I change my delay settings if over a lick so as not to use up the card in a short period of time. My memory cards are all 512 or 1 G. As season nears, I will probably change settings on all the cams, some to day time only.