Which action is effective for preventing tick infestations in dogs?

Using tick repellents during outdoor activities is an effective action for preventing tick infestations in dogs. Tick repellents are specifically designed to deter ticks, making it less likely for these parasites to latch onto your dog. When a dog is treated with an appropriate tick repellent before engaging in outdoor activities, especially in areas where ticks are prevalent, the risk of infestation is significantly reduced.

This preventive measure is particularly important during warmer months or in specific environments such as tall grass or wooded areas, where ticks are more likely to thrive. It is essential to ensure that the repellent used is safe for dogs and applied according to the manufacturer's instructions to maximize its effectiveness and ensure the health and safety of the pet.

Other options such as allowing dogs to roam freely in wooded areas or keeping pets indoors at all times may not provide adequate protection as they either expose the dog to ticks or limit their natural behaviors without addressing the infestation risk. Additionally, bathing the dog only when muddy does not contribute to tick prevention, as regular grooming and careful inspection for ticks after outdoor activities are crucial for maintaining a tick-free environment.