Many can also enter the body by breathing solvent fumes or even directly through the skin. Eyes are often sensitive to solvents and their vapors. Store all solvents carefully, making sure they're out of reach of children and pets, and read all solvent labels to make certain you use them as directed. Paints are a mix of pigment and binder which one thinned with a solvent to form a liquid. The toxicity of paint depends on the solvent it contains.
Latex paints use water as the solvent and are therefore less toxic.
Latex paint that is no longer wanted can be donated to someone else who might use it or, if it must be disposed of, it can be left open to solidify and then disposed of as solid waste. Generally, use the same precautions in handling paints as you would with solvents. Leftover oil-based paints can be handled in much the same way as latex paints, but should be given to a hazardous waste collection facility. When cleaning up after using oil-based paints, wipe as much paint off brushes as possible. If you intend to use the brushes again the next day, rinse in solvent, brush out excess on a newspaper, and wrap the brush tightly in a plastic bag.