Here's some practical application of chemistry for ya.
In short: I have a moist, hard-to-remove carpet in a car that's hard to get dry. I treated it with an anti fungal agent containing 1/5 hydrogen peroxide supposed to kill the mold. Measured it - it's very acidic - a condition mold will like in the near future.
How do I alkalize the carpet without creating a mess? I'd like to do this w easily obtainable everyday substances.
(Explaining "mess": E.g. pouring calcium hydroxide on it would probably be a hard-to-remove mess?)
The long story for context: I had a leak between the interior of my car and the engine compartment let rainwater moisten the carpet. The leak was fixed, but in the past few months had really the wrong weather for getting it dry, silica absorber packs didn't help. So, it started to mold.
To stop it, I bought an anti-mold agent fluid. I tested its pH value and it's off the scale acidic for my litmus paper.
Mold likes acidity, hence, as soon as the mold killing by oxidation wears off, the mold will like it even more, which is why I think I need to alkalize the carpet.