Comment copied from airgunbbs.com, originally made by photosbykev.
The stealth cams are ok but even the most expensive unit tend to have relatively poor optical quality as they just contain basic digital cameras triggered by PIR units. If you want something to monitor the garden and could run cabling then a IR webcam would give a better result and could be monitored on either a computer or pc depending on what type you buy.
The second webcam (the static view one) on my website is an Axis 221 model that is IR capable and with a cheap and simple IR flood light can easily watch a garden out to 10-15 metres. If you check the camera now on my site you can see just how sensitive it is as the room and tank lights are off. Fleabay is a good source of cheaper versions of the Axis camera