In many households, leftover rice often goes to waste after meals. But according to several clever home hacks circulating across Asia, combining leftover rice with laundry detergent can surprisingly help solve multiple cleaning problems around the house—without spending much money or relying on harsh chemicals.

1. The Science Behind the Hack

This combination may sound unusual, but it makes sense scientifically. Rice contains starch and natural enzymes that create a sticky, mildly abrasive texture. When mixed with laundry detergent—known for its surfactants that lift grease and dirt—the two form a powerful cleaning paste.
According to The Japan Times and Good Housekeeping, natural starch-based cleaning agents can effectively remove stubborn grime and oils on surfaces without scratching them (Good Housekeeping, 2023).

2. How It Works in Household Cleaning

a. Cleans Grease and Tough Stains
Use the mixture to clean kitchenware such as stovetops, pans, or greasy counters. The rice starch binds with dirt, while detergent molecules break down oil residues. Just scrub the paste gently on the surface, then wipe with a damp cloth for a shiny, clean result.

b. Refreshes the Microwave Interior
Microwaves often retain food stains and unpleasant odors. Apply a small amount of the rice–detergent mix to dirty areas, let it sit for 5–10 minutes, then wipe clean. The starch absorbs old food particles, while detergent neutralizes grease and smell.
(Martha Stewart Living, 2022, notes that starch-based cleaning can reduce odor build-up in enclosed appliances.)

c. Restores Wooden Furniture
Wooden tables and chairs can collect oil marks and dullness over time. Gently applying the rice–detergent mixture helps remove buildup without damaging the finish. The soft starch acts as a natural polish, leaving the surface bright again.

d. Deodorizes Your Home
Place a small bowl of leftover rice mixed with mild detergent in corners of the kitchen, bathroom, or refrigerator. The rice helps absorb moisture and odors, while detergent leaves a subtle fresh scent.

3. Safety Tips When Trying This Hack

• Choose a mild detergent: Avoid strong chemical or bleach-based formulas, as they may harm surfaces or release harsh fumes. Eco-friendly or enzyme-based detergents work best.

• Test first: Try the mixture on a small hidden spot before applying it widely, especially on wood or painted surfaces.

• Avoid delicate materials: Do not use the mixture on silk, leather, or untreated natural wood.

4. Why You Should Try It

This simple DIY cleaning trick helps reduce food waste and cuts down on the cost of store-bought cleaners. More importantly, it’s safer for families who want to limit exposure to harsh chemicals.
As The Guardian (2023) reported, “starch-based household cleaners are gaining popularity as sustainable, low-cost alternatives for everyday cleaning tasks.”

In short:
Mixing leftover rice with laundry detergent is an eco-friendly, low-cost cleaning solution that tackles tough stains, refreshes appliances, and neutralizes odors—all while reducing waste. Try it once, and you might never look at leftover rice the same way again.