I hadn't seen a live spider yet, but after having the car sitting in the garage for a few weeks, I started noticing little webs from the car to the floor. That was enough. Clearly something from the arachnid family was still stalking around in the car. I assumed there were at least a million of them. I decided the first step in our restoration was some good old-fashioned chemical warfare.
But it's not enough to just get a can of Raid and go spraying what could be seen. This car has sat still for nearly 30 years - there are likely lots of nasty little squatters and nest-builders in there. The overkill solution I settled on was a couple of fogging cans and a monstrous tarp from
So, tent the car, put the fogging cans on some shoe box lids to keep them upright, pop the tops, hold your breath, and slide those little suckers under the tarp - quick like a bunny - one under the engine bay, and the other just in front of the rear axle. The best part is that with all the noise of the fogging cans hissing under the tarp, you couldn't hear the spiders gasping their last and going to that great big web in the sky. I waited three days before I uncovered the car. And what do you know - no more new webs were showing up under the car anymore. But later as I disassemble the car, I'll find spider carcasses in nearly every single crevice. I even found one between a u-joint and the drive shaft. As far as effectiveness, I give this eight thumbs up! (OK, that's bad, I know...)