I have a vinyl liner pool with a recessed white ladder and corner steps. Every year they become yellow. I use Jack's Magic The Step Stuff on the steps with great results. The problem is, I can't use it on the recessed built in ladder in the deep end because the product uses gravity to let the liquid and granular reagents settle. Any good ideas on how to get the ladder clean? Area there any good products that come with an applicator that can be applied directly to the surface? Appreciate any help.