I’ve experimented with these fluids
Mobile Fidelity Record Wash
Spin Clean Fluid
Nitty Gritty Fluid
Keith Monks discOvery fluid
L'Art du Son Fluid
Record Doctor
VPI Fluid
They all work but I’ve found the disOvery fluid has the blackest background followed by L’Art du Son. But the L’Art must be kept in the refrigerator once opened. Yes the discOvery is a bit more $$ but IMO does the best overall cleaning job for new or used LPs.