Bentonite clay basement waterproofing method?

We have a poured concrete basement, 4 years old, with 14 wall cracks (6 of which are actively leaking). We're fixing the outside grade, extending our downspouts and adding window well covers. We're having the cracks repaired from the interior as well.

We're also considering using exterior injections of bentonite clay as a waterproofing method. Keep in mind this is exterior, not interior. What kind of experience have you had with this method? How long has it been holding up or how quickly did it fail? Does it seep into and clog the drain tile around the perimeter of the house or no? If not, how do they prevent that from happening? Any additional information you have on this method would be great. Thank you very much!

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