Earlier, Google's Matt Cutts releases a video for link spamming and disavow. He was telling that if we should not submit single link in disavow tool. If there is any problem from that link then we need to collect our all bad links data and then submit it in disavow. He also said, if we should also submit main domain name in disavow then it will be good. After crawling these links Google will remove these sites from your baclink.
