They do sell their remover now to the general public...I can attest to what Marty says. I have experienced one of the few Caswell liner failures I’ve ever heard of. The tank was already professionally lined when I bought it. So not sure what the reasoning behind the decision for it was. Under the failed portion of the liner the tank is smooth and like new. When I reached out to Caswell about it, they told me the same thing that Marty stated. Their product is designed to bite onto rough/rusty and textured surfaces. Very frustrating as the only way to remove the liner is nasty chemicals that they dont sell to the public consumer.