There have been some positive reviews, however. One modern critic said "the story is adequately paced, the acting is engaging, and we still get a thrill seeing the Army guys empty their cartridges at the unstoppable insects." Another modern reviewer found the screenplay effective, especially the beginning: "As in "Deadly Mantis", the "complete" disappearance of the victims is especially chilling, as is the notion of 150 men, women and children being devoured overnight while in their beds. This aspect is like something out of Lovecraft, although it is not exploited as well as it could have been." Producer-director Bert I. Gordon said he did not care whether reviews were bad; what mattered was whether people went to see the film: "The movie audience these days consists almost entirely of teenagers. Either they're naïve and go to get scared, or they're sophisticated and enjoy scoffing at the pictures. There isn't much a teenager can scoff at these days, you know." Lead actor Peter Graves also felt the film worked on a certain level. "I think they played OK. ... All of that was ludicrous, but there were a certain amount of people who 'bought' it and loved it."