Julieanne Lamond writes in Southerly that "McLaren attempts to find a stable connection between the Buddhist acceptance in the face of unknowing ... and the anger and drama of his sense of history".
McLaren's work has been anthologised almost widely. His poems appear in Noel Rowe and Vivian Smith's Windchimes: Asia in Australian Poetry (Pandanus Press, 2006), Australian Poetry from 1788 (edited by Robert Gray and Geoffrey Lehmann), A Slow Combusting Hymn (edited by Kit Kelen and Jean Kent) and Contemporary Australian Poetry (edited by Martin Langford, Judith Beveridge, Judy Johnson and David Musgrave). His work was shortlisted in the Newcastle Poetry Prize in 1999, 2016, 2017, 2021 and 2022.
His seventh book, camping underground, is a post-apocalyptic/dystopian verse novel set in and around Cessnock in the Hunter Valley. Of it, novelist Fiona McFarlane writes that "McLaren has written the Great Australian Apocalypse. camping underground is a vernacular lament for our country’s past, present, and possible futures, but it never succumbs to cynicism: it feels urgent, affectionate, and beautiful, full of despair and love and a biting sense of humour. I read it in one sitting, completely spellbound, and it made my heart both shrink and stretch." Former Cessnock writer John Hughes writes that "McLaren’s verse grabs you like an accident, like the blood smell of metallic paint, or the flecks of hair and scalp behind a twisted steering wheel. His country towns, like his Australia, are human versions of a wrecker’s yard, as if all the violence and unlived life of their inhabitants concentrated in that instant before death and exploded. This poem is a record of that explosion." Pam Brown calls camping underground "a daring and brilliant work".