There was supposed to be a dramatic shot of the giant spider crushing the house by having the spider dropped from a crane onto it while a bulldozer chained to the back of the house would pull away. However, when the shot was filmed, the spider's legs all went straight up into the air. The crew inside working it's arms were nearly killed when broken wood from the demolished house went through the spider, coming close to impaling them.
In May 2005, Michael J. Nelson and Kevin Murphy of Mystery Science Theater 3000 (1988) hosted a Bill Rebane film festival, featuring this movie, in Madison, Wisconsin. A 1997 MST3K episode featured this film. Nelson and Murphy said despite lampooning the film, they admired Rebane because he was able to make the film with such a low budget.
The film was supposed to include a shot of a big spider in a tree bursting into flames. The director covered a large prop spider with gunpowder and had two crew members sit above it in the tree, waiting to drop a match on the spider. The director got the camera up to a very fast fps to achieve a slow motion look, and had them drop the first match. Nothing happened, so they dropped a second. Still nothing happened, so they lit the entire book of matches and dropped it on the spider. Nothing happened, and the director turned off the camera, just as a huge explosion and fireball shot up, burning the hair off of the crew members and starting several small brush fires. The director was furious that he wasn't able to get the shot on film.
The giant spiders were Volkswagen Beetles covered in fake black fur, with the leg operators manipulating the limbs from inside the car. The vehicle was driven in reverse with its tail lights acting as the creature's red eyes. The other spiders were puppets.
Nearly all of the night scenes were shot day-for-night and darkened in post production. Some of the footage was darkened too much to be seen clearly, but it was still used in the film.