Fungastop - Broad Spectrum Antifungal CompoundFungastop is a broad spectrum antifungal treatment containing naturally derived ingredients that inhibit and control damaging fungi on turf grass and ornamentals. Fungastop is a potent and effective alternative to synthetic chemicals and is OMRI listed. Our concentrate formula is OMRI Listed and must be diluted 200: 1. Our Lawn & Garden formula is specially sized for homeowners and must be diluted 50: 1. How it Works Fungastop prevents fungi by