Herbal antiseptics with phytoncidal action, for example, plant essential oils, can be used indoors in the presence of people. The antifungal activity of essential oils of medicinal plants (anis, basil, clary cage, clove, coriander, jasmine, juniper, lavender, lemon, orchid, rose, rosemary, tea tree, wormwood, ylang ylang) was evaluated by the degree of growth inhibition of mold colonies Alternaria alternata , Aspergillus oryzae, Aspergillus flavus, and Cladosporium cladosporioides. Colonies incubated in Petri dishes with a drop of essential oil on the lid under control petrolatum. All essential oils in the experiment had phytoncidal properties. The oils were divided into groups: 1 with fungicidal action (coriander, jasmine, orchid, rose); 2 with high fungistatic activity to all strains (lavender, basil, tea tree oil); 3 with fungistatic properties against individual strains (C. cladosporioides rosemary and anise, A. alternata and A. flavus lemon, A. oryzae wormwood); 4 with a stimulating effect of the growth of colonies A. oryzae lemon oil.