I bought a pet sponge at PetsMart and the clerks were not familiar with it at all. There were maybe half a dozen sponges in stock. I hate to say it cuz I'm long and strong spng and I am afraid of inducing an angry mob here, but the soap in the sponge seems pretty thin and doesn't lather up much at all. I have not tried any other products - do the others give a better lather?
Are they also selling the carwash sponges at your wife's store? If so, how have those been selling? When was the initial order for the carwash sponges? How many times have they reordered?