Primarily refers to human or animal excrement, urine, and other bodily waste, but can also include general garbage and dirt in sanitation contexts. Often used in public health, cleaning, and legal settings.
I had trouble disposing of the waste in the park restroom.
Please do not flush refuse.
Hospitals must properly dispose of filth and waste.
I cleaned up the filth that had spilled on the floor.
There was filth stuck to the shoe.
The workers removed the filth from the sewer.
廃棄物 is the legal/administrative term for waste material of any kind, while 汚物 emphasizes filth and unsanitariness rather than disposal category.
sanitary waste receptacle; sanitary napkin disposal bin; fecal specimen container
Compound of 汚 (お, 'dirty') + 物 (ぶつ, 'thing'). The reading おぶつ follows the on'yomi pattern.