I think that was me both times! It may also be the heat that attracts the spiders, but it seems I've had more trouble with the litte arachnids (and bats) since adding the IR cams. Instead of patching into the camera's innards to find the IR power lines, I'd just put the whole camera on a motion detector that you could also activate manually. That way, the camera's not generating either heat or IR when you're not using it.
In fact, I might just do that with the driveway cam because it needs de-webbing again and it's a nasty chore that always has the potential of misaligning the camera. I'm going to try saturating the surrounding bricks with bug spray as another poster suggesting before I start cycling the camera on and off. I've discovered that some electronic devices don't like being cycled frequently via the power supply. I'd hate to blow a $150 camera from powering it on and off from the power supply too much.
Fair warning. The do make other cameras with ratings .5 lux and greater seem nightblind.
Front and side doors are miked as part of the door intercom system.
You can buy one of the multiplexers Marc recommended or a Channel Vision 4 channel modulator (like I did) to inject the signal into the cable TV or dish system. I also have a ProVideo sequential switcher that handles the 8 "surround" cameras and switches between them every 5 seconds or so and put that output on one of the modulated channels. That way, all the cameras like the shed cam, driveway cam, porch cam etc each get 5 seconds on screen, so I see sort of a carousel view of the outside of the house. Those eight cams also include backup front door and side door cams. I'm seriously thinking of buying a multiplexer like the one Marc cited so I can do more with the existing cameras. A sequential sequencer always seems to switch away at the wrong moment!
It turns out what I really need to do is mount a camera on my neighbors house that looks at mine. I might settle for a tree mounted camera at some point because building mounted cams have serious blind spots.
-- Bobby G.