That claim is misleading.
Putting an oven rack in a bag might be part of a cleaning hack, but it will not magically make it “as good as new” without scrubbing or effort in most cases.
What actually happens with this type of method
Some viral cleaning tips suggest:
- Placing oven racks in a trash bag
- Adding ammonia, baking soda, or a cleaning solution
- Sealing it overnight to loosen grease
What this really does:
- It can soften grease and burnt-on residue
- It may reduce how much scrubbing is needed afterward
But it does not fully remove baked-on carbon, rust, or thick grime on its own.
Why scrubbing is still usually needed
Oven racks accumulate:
- Hardened grease
- Carbonized food particles
- Heat-bonded residue
These deposits often require:
- Mechanical scrubbing (brush, sponge, steel wool depending on material)
- Soaking + wiping steps
Chemicals alone rarely restore them completely.
Safety note
Some versions of this “bag method” involve ammonia, which:
- Produces strong fumes
- Should only be used in well-ventilated areas
- Must never be mixed with bleach (toxic gas risk)
Better realistic approach
For best results:
- Soak racks (hot water + dish soap or baking soda)
- Use a degreasing cleaner or ammonia method if needed
- Light scrubbing to finish
Bottom line
The “no scrub, like new” claim is an exaggeration. It may reduce scrubbing, but it does not eliminate it, especially for heavily dirty oven racks.
If you want, I can give you a safe step-by-step method that actually works well without much effort.