The primary challenge of preventing non-native species invasions is their potential to disrupt local ecosystems and outcompete native species for resources. Invasive species can alter habitat structures, introduce new diseases, and create imbalances that threaten biodiversity. Preventing these invasions requires coordinated efforts across borders, as species can easily spread through trade and travel. Effective management strategies include public education, monitoring at entry points, and early detection systems. Overcoming regulatory and logistical challenges is essential to minimize the ecological and economic impacts of these invasions on fragile environments.