Vesicovaginal fistula (VVF) has huge physical, psychological and, above all, social implications in a woman's life. It has always been a challenge for the urogynaecologic surgeons to manage VVF. VVF can be caused by unrelieved obstructed labour, pelvic surgery, malignancies, radiation therapy, infection and trauma. Here we report a case of VVF caused by the application of a mixture of chemicals in a female with longstanding pelvic organ prolapse. This occurrence is unique by virtue of aetiology and to the best of our knowledge is only the second of its kind reported till date. We have also explained the operative technique used to combine both the prolapse and the fistula repair into a single operation that achieved excellent functional results.