Depends. Do a bunch of reading on this site, and see what DIY chems people in the business have tried and still use. There are some. That said, you will find out that most people need or want more "bite" than the store bought can provide. There are great suppliers and manufacturers that work with the professional cleaners to help solve your cleaning problems. Find one in your area or find one that supports your favorite BB. Good luck from one newbie to another. The learning curve is steep!