A botanical compound called p-anisaldehyde has been found to have deterrant properties on the larval stage of lone star ticks (Amblyomma americanum). The effects on nymphal and adult (shown above) stages of the lone star tick have yet to be tested, however. (Photo credit: Dr. Amanda Loftis, Dr. William Nicholson, Dr. Will Reeves, Dr. Chris Paddock, via CDC Public Health Image Library)