General Cottage Q&A: How effective are possums at tick control? By Cottage Life Published: July 18, 2025 share Share on Facebook Share on Twitter Share on Pinterest Copy Link Cancel Rumour has it, possums are particularly good at keeping the tick population down. But is this rumour based in science? Senior editor Alysha Vandertogt investigates. Related Story This Ontario vet uses a onesie to protect her dog from ticks. Should you too? Related Story Is lemongrass the newest tick repellent? Related Story This lesser known tick-borne disease is on the rise in southeastern Ontario