Spilling paint on a wood floor can be an arresting situation, but there are steps you can take to remove the paint, even if it's dried. In cases where the paint has just spilled, time is of the essence. Quickly get a container of warm water and a rag or mop and immediately wipe the area. Immediate action will remove both latex and oil paint. Dried paint, on the other hand, can be a much more arduous process, but there are a few options at your disposal.
For small spills, such as a few drops on a wood floor, the product Goo-Off works well. Spray over the drops and wait for the Goo-Off to dry. You can use a blow dryer to speed up the process. Once the surface is dry, scrape up the drops of paint using either a credit card, plastic cutlery, or your fingernail. Other items, like a knife, may work slightly better but they can scratch the floor.
For larger areas, spread a mixture of dishwasher soap and water over the area and try to mop up the bits of paint. This works best on areas that are large, but have only a thin amount of paint on them. If the large area has a lot of paint spilled on it, rubbing alcohol works best. Cover the entire area with the alcohol (up to a gallon if the area is especially large) and cover it with a plastic sheet for 10 minutes. Then slowly remove the sheet while mopping up the spots of paint. You may need to use a scraper for some difficult parts. The same process works with oil paint, but you will need a harder scraper, such as a paint scraper or steel wool. There is a chance that alcohol will damage the wood varnish, so use the soap-and-water method if the floor is especially valuable.
Cleary, the best way to manage these situations is to take measures to avoid spilling paint in the first place. Always use a drop cloths that are large enough to cover the entire area. Another trick is to paint barefoot. Many spills result from people unknowingly walking through their house with paint on their shoes. If you paint barefoot, you will immediately realize when you've stepped in paint.