WD-40, according to the outside of the can, "loosens rusted parts."
That's why the Bears likely have a can or two handy.
Head coach John Fox dropped a reference to the household spray Tuesday, when he was asked about wide receiver Kevin White, who's set to see the field for the first time as an NFL player after his rookie season was wiped away with an injury last year.
Understandably, White is still showing some effects of coming off the injury, according to Fox, and so the Bears are still working him back into shape.
"There's some rust. Any time somebody doesn't practice and play, we call it 'bring the WD-40 out and spray the rust off,'" Fox said. "I'm seeing progress in him getting back into football condition."
There are high hopes for White, who the Bears picked with the No. 7 pick in last year's NFL Draft. At West Virginia, White wowed, catching 109 passes during his senior season for 1,447 yards and 10 touchdowns.
But White isn't the only Bears wideout coming off injury. That's the story, too, for Alshon Jeffery, and both the rookie and the veteran are working their way back this summer ahead of the 2016 campaign.
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"They're both very, very talented players. We're trying to get them in condition for a regular football season," Fox said. "I think being out here at practice, the more they get that timing with the quarterback and the rest of their offensive teammates the better. We've had a little bit of a string there — knock on wood — but when they're healthy they're capable."