Every day there are hundreds of gallons of water flowing through pipes, fixtures, and drains in your home, and because of that, they can get clogged or start to show signs of wear and tear over time. When your plumbing system starts to fail you, it is essential you immediately contact a plumber so they can evaluate the current and potential damage and offer you further guidance on the plumbing repairs you need to consider having done.
Most of the items you put down the drain will remain unchanged from the time they go down the household drain or toilet. They don’t breakdown and tend to clog the wastewater system. The cost of maintaining the system will reflect on your utility bill. Grease is a liquid when it goes down but quickly hardens on the pipes. The oil accumulates on the canals and ultimately makes the pipe so small that even typical wastewater can not make its way through the system. That only leaves one way for it to flow.
Don't shrug off that trickle coming from your toilet as a small problem. Even the tiniest leak can be quite expensive in the long run as you end up wasting potentially hundreds of gallons of water. See if you can find the root of the leak, or seek out professional advice, and keep your toilet running efficiently.