LeafGuard of Charlotte only installs LeafGuard Brand Gutters. LeafGuard® has earned the Good Housekeeping Seal, the foremost symbol of quality assurance and safety in America. To earn the Good Housekeeping Seal, LeafGuard underwent stringent testing by the Good Housekeeping Institute, the consumer product evaluation laboratory of Good Housekeeping magazine. LeafGuard was evaluated for six weeks by the Institute to ensure that the LeafGuard system met consumer expectations and performed as promised. LeafGuard & The Good Housekeeping Seal: Brand Names You Can Trust. The Good Housekeeping Consumers? Policy, published in every issue of the magazine states that if the product bearing the Seal proves to be defective within two years of purchase, Good Housekeeping will replace the product or refund the purchase price.