Answer: elbowgrease

AnswerCrossword Clue
ELBOWGREASE

It may be needed to get out a tough stain

ELBOWGREASE

Vigorous effort

ELBOWGREASE

Oomph

ELBOWGREASE
It's a lot of extra work
ELBOWGREASE
Extra effort, figuratively
ELBOWGREASEHard work
ELBOWGREASEReal effort
ELBOWGREASEExertion, so to speak
ELBOWGREASEEffort
ELBOWGREASEEffort, so to speak
ELBOWGREASEExertion
ELBOWGREASEExtra effort, so to speak
ELBOWGREASEThe best workers use it.
ELBOWGREASEHard work: Colloq.
ELBOWGREASEEnergy of a kind.
ELBOWGREASEEnergy of a sort
ELBOWGREASEVigorous physical effort
ELBOWGREASEExtra effort
ELBOWGREASEStrong effort in cleaning
ELBOWGREASEStrong cleaning solution?
ELBOWGREASELubricant for the industrious
ELBOWGREASEStrenuous exertion