I tend to use Shockwave, with huge success. I love how it digests most spots and stains almost instantly. I tend to spray on, agitate the spotted/stained area by rubbing firmly with my foot (with shoe covers on) and I can instantly tell if the spot/stain will come up (normally it just disappears there and then) More often than not it does with synthetic. Today I did a whole house, including lots of food spill and old coffee stains using this method without any need for a spotter. Its so quick and cheap.
I imagine the same would apply to enzall since they are both enzymes, but correct me if im wrong.