You don't need fancy tools to fix this. Here is the step-by-step guide:
Look at the back wall of the fridge, near the bottom floor. You will usually see a small depression or a trough. Right in the center of that trough, there is a tiny hole—that is your defrost drain. unblock fridge drain
The blockage was deeper. This required liquid force. She filled the turkey baster with a solution of hot (not boiling) water and a tablespoon of baking soda. The baking soda is gentle, deodorizing, and dissolves organic slime without harming the fridge’s plastic or rubber seals. She inserted the tip of the baster firmly into the drain hole and gave a sharp, forceful squeeze. You don't need fancy tools to fix this
Your refrigerator goes through a defrost cycle regularly to melt frost off the cooling coils. That melted water is supposed to drip down into a drain hole at the back of the fridge, travel down a tube, and collect in a pan near the compressor, where the heat evaporates it. Right in the center of that trough, there