Remember that alcohol is quite flammable. Detergent and water will remove latex before it dries. These chemicals can be quite harsh and gentler chemicals may be tried first. Lacquer thinner is a combination of petroleum distillates, alcohol, toluene, methyl ethyl ketone, and butyl acetate which is enough to soften most finishes, waxes, or greases but damage to the underlying surface should be considered . Lacquer thinner, acetone, and various petroleum based products work well.
Paint strippers are available which contain highly volatile and extremely effective solvents.
The strippers typically contain additional chemicals which form a vapor barrier to slow the evaporation of the volatile solvents. Follow the directions quite closely for maximum effectiveness. Try various alcohols and other solvents which do not hurt the underlying surface. Isopropyl alcohol was found to dissolve the paint on clear plastic boxes without hurting the plastic finish for example. Epoxy paints and other finishes may prove quite resistant to solvents or the underlying surface may not tolerate the harsh solvents and strippers.