Six years of build-up, and a wire brush was never going to shift it

Open a grill that has been used hard for a few summers and you will find a black, slightly tacky crust welded to the grates. Most people call it seasoning and leave it alone. Some people attack it with a wire brush for twenty minutes and get a grate that is scratched, still grey, and no cleaner in the places that matter.

Both responses make sense, because the thing on that grate is not what it looks like.

That crust is not grease any more

Fat that gets hot enough, often enough, stops being fat. Repeated heating drives off the volatile parts and pushes what is left through oxidation and polymerisation — the same family of reactions that turns linseed oil into a hard varnish. What you end up with is a cross-linked carbon layer chemically bonded to the metal underneath.

That is why the usual tools fail. Washing-up liquid is built to lift liquid oils off crockery; it has nothing to say to a polymer. A wire brush can knock the loose top layer off, but it cannot reach the bonded film in the pitting and the corners, and it takes the grate’s finish with it on the way past. You are not cleaning. You are sanding.

What actually breaks the bond

You cannot out-muscle a chemical bond. You have to unpick it, and there are two well-understood ways of doing that to cooked-on fat. A proper alkaline degreaser does both at once, which is the whole reason this category of product exists.

Neither of these is fast in the way a scrubbing brush feels fast. Both need the surface to stay wet while the reaction runs. Which means the variable that decides whether this works is not how hard you scrub — it is whether you left it alone long enough.

What we sell

We put our own alkaline degreaser together for exactly this job, and called it CleanSlate. It is a trigger spray. You wet the cold grate, you walk away, you come back and wipe. There is no scrubbing step, because scrubbing was never the part that was working.

We are not going to tell you it is magic, or quote you a number of seconds. What we will tell you is what it is — a surfactant-and-builder degreaser used the way degreasers are meant to be used — and that if it does not shift what you bought it for, you can have your money back for ninety days without sending the bottle anywhere.

Using it

Where it works

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