Homemade Drain Cleaner - a bust!

My pin tonight comes from my Homemade or Natural Remedies pinboard, and unfortunately, it was a bust.  Homemade Drain Cleaner, made from just baking soda and vinegar didn't have the cleaning power needed to unclog my bathtub drain from using Coconut Oil as shaving cream which was horribly sticky inside my tub as well as the pipes it seems.  This pin did seem to help a little in my kitchen sink, but not enough to keep dumping 1/2 C. of baking soda down my drain!  I will be buying some Drain-O tomorrow!