Food packaging at the bottom of the fridge becomes wet or moldy.

Use a flexible tool to gently dislodge the clog. You can use: How to Clear a Blocked Fridge Drain Hole - Qeeper

If there is standing water, soak it up with a towel.

Look at the back wall of the refrigerator, near the bottom. You will usually see a shallow depression or a groove in the plastic liner. In the center of this groove, there is a small hole—this is the defrost drain.

To unblock your fridge drain, you'll need the following:

A clogged fridge drain is one of the most common household annoyances. It usually announces itself with a puddle of water on the floor or, more often, a sheet of ice on the bottom shelf of your refrigerator.

Most people forget the drain starts in the freezer. Look at the back wall of the freezer compartment. There’s a small channel or hole at the bottom center. That’s the top of the drain tube. If that’s frozen solid, your fridge will leak.

Is Your Fridge Leaking Water? Here’s How to Unblock the Drain in 20 Minutes

Mix 1 part baking soda with 2 parts hot water. Flush through. Wait 5 minutes. Then flush with vinegar. The fizzing action breaks up biofilm and sludge. Finish with a hot water rinse.

Wipe up any standing water. Pour half a cup of hot water into the fridge drain. If it disappears without pooling, you’ve won. If not, repeat step 4.

Pour hot water (not boiling—just hot tap water) into the freezer drain channel using a turkey baster. Watch for water to flow down into the fridge’s drain hole. Repeat until ice is gone.