Use the Mega-Plasma Blaster, it never fails to neutralise with extreme prejudice.
by mixing it with base
base
water your soil
To neutralise a sample of soil, you must determine the pH of the soil sample either acidic or alkaline. Add lime (e.g. Limestone) to acidic soil to neutralise it. And add sulphur to alkaline soil which will neutralise it.
Water is already neutral.
kill them :/
No
by the addition of base
Acids can be neutralized using bases.
Neutralise is to make something innefective.
any base
Because there is no secure way how to neutralise it.