Englert 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.