I've got one living under my porch....comes out whenever we come near a climatus that she's built her web on. If we don't kill this thing will we have a whole herd of widow's running around our house? What's the best way to take em out? She comes out just long enough to see that there's no food in her web and then she's gone again. And she is FAST! I don't want to get bitten but I also don't want the problem to multiply....any advice?