First, prepare your device for surgery.

Always disconnect the battery before you start.

Cover or remove any components that may be vulnerable to damage, in case the solvent drips or leaks somewhere it shouldn't. (A sheet of aluminum foil offers good protection.)

Vulnerable components include display coatings and plastic parts such as speaker housings and keyboard keys.

If necessary, direct the flow of solvent away from sensitive components by elevating one side of your device.

If contact with sensitive components can't be avoided, use a milder solvent such as 99% isopropyl alcohol. It will take longer and require more care, but alcohol alone won't damage most electronic components.