How do you get rid of gnats in a mausoleum with lots of flowers?

To get rid of gnats in a mausoleum with many flowers, start by ensuring proper sanitation; remove any decaying plant material and avoid overwatering the flowers, as excess moisture attracts gnats. You can use yellow sticky traps to catch adult gnats and apply a diluted mixture of water and dish soap to the soil to target larvae. Additionally, consider using neem oil or insecticidal soap, which are less harmful to plants while effectively controlling gnat populations. Regular monitoring and maintenance will help keep the gnat problem under control.