I have understood that some PHs are now using so called "Trail cameras" when baiting lion and leopard in Africa.

Are there any downsides to these products? Does the game react to the flash if pictures are taken at night? Or is the flash an IR flash and thus not detected?

They seem like they could be interesting to use for fun out in the forest here at home, and I've been considering buying one.

Any suggestions on which work and which are crap?