For babies over 6 months, you can use a combination of methods to keep mosquitoes at bay. Mosquito repellent sprays or roll-ons specifically designed for babies can be used on clothing or gear. You can also use mosquito patches on their clothing, though be mindful that curious toddlers might peel them off. Additionally, using mosquito nets over the crib and keeping the room ventilated with safe essential oils like lavender or lemongrass can provide extra protection.