1. Caustic foam oven cleaners
The classic supermarket option. Extremely effective on thick carbon, and extremely unpleasant: heavy fumes, gloves mandatory, kitchen evacuated, and typically an overnight wait. It will also etch aluminium and can damage some coatings if you overshoot.
Best for: catastrophic, decade-old build-up where you accept the trade-off and can leave the house.
2. Non-caustic foaming degreasers
The middle ground and, for most ovens, the right answer. A clinging foam with solvents and surfactants softens the carbon in a couple of minutes so it wipes away, without the fume problem or the overnight wait.
Best for: normal domestic build-up, oven door glass, racks, and anyone who wants the job done inside ten minutes.

3. Baking soda and vinegar paste
Cheap, non-toxic and genuinely useful on light residue. On polymerised carbon it is mostly a mild abrasive — you supply the energy with a scourer, over an hour or more, and the result is usually partial.
Best for: light spills, people who won't have chemicals in the house, and maintenance between deeper cleans.
4. Pyrolytic self-clean cycles
If your oven has one, it incinerates residue at around 500°C and leaves ash. It also runs for two to four hours, heats the whole kitchen, smells strongly and is a known cause of failed door seals, elements and thermal fuses on older machines.
Best for: modern pyrolytic ovens, used sparingly. Racks usually have to come out and be cleaned separately anyway.
5. Steam cleaning
Steam softens fresh grease well and is chemical-free. On hardened carbon it re-wets the surface without dissolving the bond, so you still end up scrubbing — and now the residue is hot and smeary.
Best for: regular maintenance in a lightly used oven.
Our recommendation
For most people, most of the time: a non-caustic foaming degreaser. It clears the door glass, the floor and the racks in one session without the fumes, the overnight wait, or the appliance risk of a pyrolytic cycle. Keep baking soda for maintenance and reserve caustic products for genuine disasters.
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