Andrew William Campbell was sentenced to eight-and-a-half years' jail for a baby's manslaughter. Photo: Darren England/AAP PHOTOS

For almost 24 hours, eight-month-old Dexter Wilton was left in a filthy room as his carers took drugs.

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He had been dead for hours when paramedics found him inside a property west of Brisbane.

More than six years later, Andrew William Campbell was jailed over the "abhorrent" breach of duty.

Campbell, 45, had been with Dexter's mother Natalie Jade Whitehead for four weeks and moved into her Ipswich unit, taking on a parenting role.

The baby was left unat

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