Amarex needed eight years to paint Cytodyn's house.

Obviously it wasn't just one house. Amarex painted many Cytodyn houses over the eqight year period.

If Amarex used paint remover on the first house eight years ago, Cytodyn would have known.

So either Amarex was using paint, and not paint remover, or Cytodyn needs many years to discover that their house painter used paint remover instead of paint.

Either situation is catastrophic for Cytodyn.

Seems to me far more likely that Amarex was using paint.