Residual insecticides are used for basic pest Management. A very good residual insecticide kills fruit flies quickly and lasts for months. Bleach can get rid of fruit flies, particularly when applied with your drain. Pour a 50 % gallon of boiling water and 1 cup of bleach down the drain https://howtogetridof.it.com/pest-control/how-to-get-rid-of-fruit-flies/