Worth mentioning is that it is very young spiderlings, not adults, who engage in "ballooning" to disperse from their natal web. You don't need to worry about g

Worth mentioning is that it is very young spiderlings, not adults, who engage in "ballooning" to disperse from their natal web. You don't need to worry about giant spiders with four-inch legspans falling on your head! Or not more than usually, at least - the spiders drifting out of the sky will be only at most perhaps the size of a matchhead, and even more harmless than they would be when full-sized.