What counts towards the dryads corruption status?

I have gotten a world to 1% corrupt and have been hunting down small bits of corruption for a while now, and I'm wondering if demon alters or demonite count towards the dryads calculations and if anything else does that I might be missing.
Best Answer
As far as I can tell altars (both crimson and corruption) do not count as corrupt (or crimson). However, any time an altar is broken, there is a 66% chance that a single random tile in the rock layer will become ebonstone or crimstone (depending on the world) or pearlstone. These tiles can create an entire biome if left unchecked (which might be your problem).
As for demonite (and its counterpart, crimtane), I think it is not counted as corruption (or crimson) as it does not spread any corruption (or crimson).
Corrupt thorny bushes do spread corruption and must be destroyed as well (another possible problem). Other corrupt plants do not spread corruption as far as I can tell, but the block they rest on might.
To make clearing things out easier, try investing in the Clentaminator.
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What is considered as corruption Terraria?
\u2013 According to the official game lore, the Corruption is a cancer caused by the sins of those living in the worlds of Terraria, and is strengthened by the vile actions and thoughts present in all living beings. Its purpose is to restore balance to life and then destroy it, leaving the world a lifeless abyss.What does the Dryad say when the world is 0 corrupt?
You have done an amazing job!" The world has no Corruption, Crimson, or Hallow. "The world is in balance."Does Demonite count as corruption?
Notes. Demonite Ore does not spread the Corruption whatsoever. Unlike its Crimson counterpart, Demonite Ore can be found in increased amounts within Corruption cave systems.Terraria Dryad be like:
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