I have been suffering from multiple welts, hives, or insect bites. New ones pop up every morning almost. I o live in the basement and spray for spiders. I have ruled out any new foods, meds, or any other allergic reaction. I have checked for bed bugs, silverfish, mites, and found nothing but the spiders. I'm not sure if the spiders are the culprit because I sleep well dressed from head to toe now and with the lights on. I don't think a spider can bite through the thick cotton I wear to bed but when I wake up there are new bites under my clothes. I am spraying the room again tommorow and If that does not help then I will fog it in a few days. Any other Ideas or information would be greatly appreciated.