"nice quality" (and wide) push-broom: how to clean it?

For so many years (20+) I've had this nice push-broom, nice soft thin (synthetic of some kind) bristles.
Thus far, I've never cleaned it.
As you might imagine, after all these years sweeping the kitchen floor, they've gotten a bit coated with something (the bristles, that is).
I had this belief, superstition, whatever that trying to wash or clean the bristles would somehow harm them, so I never did.
The time has, uh, come, finally, to do something.
QUESTION: just how *does* one clean a "nice" push-broom?
Thanks for any suggestions!
David
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First cleaning choice should be soap and water. I would use a long bristle scrub brush dipped in soapy water to comb the broom bristles. Take care not to soak the anchor end of the bristles for any length of time since you do not want to loosen any glue that may be present holding the bristles in place.
Regards,
John
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Ok, thanks.
What kind of soap?
Now, for dishes (and hands when food-greasy), a squirt of Dawn in eg two cups of water, into which I dip a dish-washing brush and then use on plates, forks, knives, etc. Really gets the grease, that dawn.
Or would that be too strong for those (artificial) (and thin) bristles on the broom?
Thanks!
David
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