The best and cleanest way to get rid of flies is to set up fly extinguishing lamps indoors ~ and also your protective measures should be done well ~ screens, windows, curtains ~ it is better not to use insecticides ~ it will have an impact on the restaurant ~ or combine them with the following methods, which will be even more effective.1. Put sponges soaked with a few drops of lavender oil on small plates indoors to get rid of flies.2. Put lemon or onion slices next to meats or on the window sill to make the flies unable to come near.3. Mix black pepper and black casters in a ratio of 1 to 2 and dissolve them in milk to become a safe trapping potion. approach.3. A safe trapping potion is made by mixing black pepper and black granulated sugar in a ratio of 1 to 2 and dissolving it in milk. Follow-up: Yes, plants such as evening primrose, pyrethrum, wild daisy, purple jasmine, lemon, zinnia, jasmine, orchid, lilac, celosia, corn flower, dandelion, mint, etc., have special fragrances or odors that are harmless to people, and pests such as mosquitoes, cockroaches, flies, etc., will avoid them when they smell them. Some of these special fragrances or odors can also inhibit or kill bacteria and viruses. Tien Thought of You testimonials: