We would like to have some testing done to determine how much chemical residue is left on a surface (such as a countertop, table, or hand railing) after a typical user sprays and wipes with a chemical cleaner? (I believe Mr. Clean, for instance, glows yellow under black light. It might be interesting to use this to test for and photograph residue.) Follow up testing could look into whether or not the residue attracts and retains dust & dirt, makes surface dull and if it becomes necessary to clean more frequently.