The easiest way to prevent a blocked drain is by being careful about what you put down your pipes. However, there is a silent drain destroyer that's lurking in your backyard.
How to clear blocked drains and blocked toilets using a plunger
If you've got a blocked drain or blocked toilet, the simplest DIY method to fix it is using a plunger. They are cheap and readily available from all hardware stores. Make sure you use the correct plunger for a job. You’ll need a drain plunger or cup plunger for the majority of clogged drains. Toilets are the exception. To unblock a clogged toilet you’ll need a specific toilet plunger which is often called a flange plunger.