That sounds like the classic “oven rack in a trash bag” deep-clean hack — and yes, it works surprisingly well.
Here’s what that tip usually means:
🧼 The No-Scrub Oven Rack Method
What You Do:
- Place your dirty oven rack inside a large heavy-duty garbage bag (or two layered bags).
- Add:
- Ammonia (about ½–1 cup)
or - A mix of very hot water + dishwasher tablet
- Ammonia (about ½–1 cup)
- Seal the bag tightly.
- Leave it overnight (8–12 hours).
- The next day, open it outdoors, remove the rack, and rinse/wipe clean.
Why It Works
With ammonia:
- The fumes break down baked-on grease.
- You don’t even need to submerge the rack — the vapor does the work.
With dishwasher tablet:
- Enzymes and degreasers soften stuck-on residue.
Most of the grime wipes right off — no heavy scrubbing.
⚠️ Important Safety Notes (Especially with Ammonia)
- Do this outside or in a very well-ventilated area
- Never mix ammonia with bleach (toxic gas risk)
- Wear gloves
- Keep away from pets/kids
Bonus: Even Easier Alternative
If your rack fits:
- Soak it in a bathtub with hot water + dishwasher tablet
- Let sit overnight
- Wipe clean
(Just lay an old towel underneath to protect the tub.)
If you’d like, I can also give you a non-chemical natural method (baking soda + vinegar) — it takes longer but works too.