BioSafe Guarda Botanical Fungicide & Bactericide, 2.5 GallonsGuarda Botanical Fungicide, Bactericide Powered by HOLDit Technology Guarda is the first EPA registered, bactericide fungicide with botanical thyme oil as the active ingredient. Take advantage of up to 14 days of residual activity and say Cu later to heavy metals. Why use Guarda? No use restrictions Low risk of resistance: ideal for IPM programs MRL tolerance exempt 0 hour REI; zero day PHI Extended performance up to 14 days Tank mix compatible with