I would suggest putting the cam up high out of hand’s reach and camouflaging it with tree limbs/leaves.
To get a idea of the cost for one cam I did some research. The cheapest place I found was actually on eBay at an average cost of $105 to $120. To find them I used the search words “no flash infrared camera” in the sporting goods category. Anywhere else and they’re $200-plus.
Here’s a thought. If the cost is too high, make up some big signs stating the preserve has hidden infrared cameras and violators will be prosecuted to the fullest extent of the law. Even if there are no cameras, violators won’t know that and may decide to take their trash back home.
Charly Small, Logansport