THE mother of murdered teenager Aaron Pajich says she wants his killers — Jemma Lilley and Trudi Lenon — never released from prison.

Sharon Pajich wept as she described her 18 year-old son as “full of life”, before he was mercilessly garrotted and stabbed to death last June after being targeted by the pair for a “thrill killing”.

A Supreme Court jury took less than three hours to convict Lilley, 26, and Lenon, 43, of murder after five weeks of graphic and disturbing evidence.

Camera Icon The mother of Aaron Pajich, Sharon Pajich, outside court. Credit: PerthNow, AAP Image/Rebecca Le May

Outside court, Mrs Pajich said that she was happy that her son had been given some justice.

“It is heartbreaking to see what happened to your boy,” Mrs Pajich said.

“You can’t get it out of your head, and it will be a lifetime for me. They deserve everything they get for what they’ve done.”

Mr Pajich said she hoped that a full life term would be considered when the pair were sentenced next February.

“They have taken an innocent boy from his loved ones,” she said. “He was my precious little boy, my first born — he was full of life, he loved life.

“They are disgusting animals … they can rot for all I care. (They should get) a lifetime, no parole. They don’t deserve the air they breathe in.”

Camera Icon Jemma Lilley and Trudi Lenon. Credit: PerthNow

The details of Mr Pajich’s murder were so horrifying that Justice Stephen Hall has told the jury counselling was available for them if they needed it.

Lilley and Lenon showed no emotion as they were convicted, just as they had done throughout much of the trial.

Aaron’s father Keith Sweetman sat with tears in his eyes as the jury delivered the verdicts, and mouthed the words “thank you” to the 12-person panel.

The trial was told how Mr Pajich was lured to the Orelia home by Lenon, who knew him through a friendship with one of her sons.

Camera Icon Sharon Pajich, centre, the mother of Aaron Pajich, leaves court after the verdict was announced. Credit: PerthNow, Danella Bevis

When he got there, he was attacked with a garrotte and then a knife, with two stab wounds to the neck and one to the chest. His body was stored at the house, in a locked room, before being buried under a clumsy DIY patio.

The women blamed each other, with Lenon claiming her young friend was a wannabe serial killer.

The court was shown evidence of Lilley’s obsession with knives and multiple murderers.

But Lilley pointed the blame at Lenon, claiming she had wanted Aaron at the house to train him in bondage and sado-masochistic sex, which she had participated in for years.