Hi, we are having a problem with sewer smell coming from the toilet bowl. Once I clean the toilet bowl, it is OK for about 4 days and then the smell comes back. So I clean the toilet bowl again and the cycle repeats itself. Where is the smell coming from? Please help!

The smell is most likely coming from a bad wax ring under the toilet. Smell drift around and are difficulkty to pin down but a bad ring is the top cause of sewer gas in the bathroom. Replace the ring for about $3 and I bet you will be fine