Determine what fiber the carpet is made from and how it is dyed. Most bowling alley carpet is olefin. So I would use Traffic Slam and possibly add an ounce or two per gallon of Citrus Solv. USe hot water,
Be careful if you get one of those glow in the dark carpets found in some bowling alleys. They dye is very sensitive to pH. You can go to www.InterlinkSupply.com under the "Technical Resource Guides" to check out an article on how to clean that type of carpet.