What method is used to monitor ticks in an environment?

• A. Targeted sprays
• B. Mow grass often
• C. Discourage wildlife
• D. Tick drag or dry ice trap

Answer: (D)

Sampling for ticks relies on methods that invite them to reveal themselves, typically by collecting them from the environment rather than applying controls. Dragging a cloth or ruler over vegetation—tick drag or flagging—is a standard field technique because many ticks perch on grasses and shrubs while waiting for hosts. As the cloth passes, questing ticks latch on, allowing researchers to estimate tick density and activity in a given area.

Another common monitoring approach uses dry ice traps. The CO2 released by the dry ice mimics a warm-blooded host, attracting host-seeking ticks to the trap where they can be collected and counted. Both methods are designed to measure tick presence and activity levels, helping assess risk and track changes over time.

In contrast, targeted sprays, mowing, and discouraging wildlife are control strategies aimed at reducing tick populations or altering habitat, not methods for monitoring their presence and activity.