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You can sprinkle some water on the contaminated items first.

Then spray a small amount of cleaning liquid.

Finally, quickly wipe it with a rag.

Little by little, don't rush to clean up at once. If the area is large and the crust is thick, you can sprinkle some alcohol first, the alcohol will soften, and then wipe it with water and cleaning solution.

Ethanol is a good solvent, which can dissolve many inorganic substances and many organic substances. Therefore, ethanol is often used to dissolve plant pigments or their medicinal components, and ethanol is also often used as a solvent for the reaction, so that both organic and inorganic substances involved in the reaction can be dissolved, the contact area can be increased, and the reaction rate can be improved.

For example, in the saponification reaction of oils and fats, adding ethanol can not only dissolve sodium hydroxide, but also dissolve oils and fats, so that they can fully contact in homogeneous phase (solution of the same solvent), speed up the reaction and improve the reaction limit.