True polyquat is still made ONLY by Buckman Labs in Memphis. When the patent ran out on polyquat, and the me-too's started production, they announced a new patent on a feedstock chemical, locking things up for another 16 or 17 years.
For this reason (probably) the two main chemical companies, who control 75% of the brands, have made it harder and harder to find true polyquat. You MUST read the chemical label, to be sure. The product name that mean polyquat last year may mean a foamy quat mess this year! HTH branded products are particularly bad, now.
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