Oil leak detector

Many times in these forums, people have suggested that Deseret Foot Powder be used to detect the exact location of a minor oil leak.  Unfortunately, Desenex no longer appears to have spray cans...they now use "shake bottles".  Does anyone know of another product like Desenex that can be used?  Many of the other foot powders claim that they dry"clear" without any powder residue.  Any thoughts?

Thanks!