The street doesn't work, you can try performing a plumber's snake down the drain to determine if the metal tape will free it up. Clear silicone, though harder to clean up, efficient instead of putty. Dripping sewer pipes can seep via your basement and walls. https://Vymaps.com/AU/The-Grout-Guy-Perth-Leaking-Shower-Repairs-And-Re-Grouting-188901/