Why do some spiders use venom instead of wrapping prey in silk right away?

Many spiders inject venom to subdue prey because it reduces the risk of injury during capture. A fast-acting toxin can stop an insect or other small animal from struggling, which makes wrapping and feeding safer. Different spider venoms are adapted to different prey types and hunting styles. Some spiders rely more on ambush and venom, while others combine silk, speed, and venom in different ways. This makes venom a key part of spider predatory success.