When it comes to blocked sewers, you've got two options:
A licensed plumber will be able to identify the cause of the blockage quickly and clear it out. A great plumber will even repair any damage to ensure your sewer drains stay unblocked.
If you're set on trying to unblock your drain yourself, we recommend not doing anything drastic. Plungers and drain cleaner are good for small blockages, but they may not solve the problem completely if the blockage is caused by a break in the pipes. Trying to clear out the blockage with drills or by digging up the pipe can leave you with pipes more broken than when you started.
We always recommend hiring an experienced plumber to take care of blocked sewers, as this will ensure you will get the best results and prevent further damage to your sewerage system.