You are so cruel
I would probably freak out and call a pest exterminator dude and stay in a hotel for awhile until all those spiders are gone lol. I actually thought that black widows only exist in South America
but I guess California is warm enough for those buggers ^^
Well from what I have heard that the female ones are much much more venomous than the male course of their size and that they inject much more venom when they bite
Some facts about their bites from wiki:
Quote
Although these spiders are not especially large, their venom is extremely potent (it is also reported to be much more potent than the venom of cobras and coral snakes). Compared to many other species of spiders, their chelicerae are not very large or powerful. In the case of a mature female, the hollow, needle shaped part of each chelicera, the part that penetrates the skin, is approximately 1.0 millimeters (about .04 in) long, long enough to inject the venom to a point where it can be harmful. The males, being much smaller, inject far less venom with smaller chelicerae. The actual amount injected, even by a mature female, is very small in physical volume. When this small amount of venom is diffused throughout the body of a healthy, mature human, it usually does not amount to a fatal dose (though it can produce the very unpleasant symptoms of latrodectism). Deaths in healthy adults from Latrodectus bites are relatively rare in terms of the number of bites per thousand people. Sixty-three deaths were reported in the United States between 1950 and 1959[15]. On the other hand, the geographical range of the widow spiders is very great. As a result, far more people are exposed, worldwide, to widow bites than to bites of more dangerous spiders, so the highest number of deaths worldwide are caused by members of their genus. Widow spiders have more potent venom than most spiders, and prior to the development of antivenin, 5%[16] of reported bites resulted in fatalities. The venom can cause a swelling up to 15 cm. Improvements in plumbing have greatly reduced the incidence of bites and fatalities in areas where outdoor privies have been replaced by flush toilets.