Tanglefoot can be a problem to use but can be readily removed with hand cleaners that contain citrus extracts like d-limonene. GoJo Natural Orange Pumice Hand Cleaner works very well. During our experiments we caught thousands of deer flies by trolling traps slowly on vehicles in different habitats'. Truck-mounted apparatus used to develop the Trolling Deer Fly trap. Some other important facts about deer fly biology and behavior.
Deer flies are active for the most part during daylight hours but a few feed after dark.
Some are more active in the morning or evening. Adult deer flies spend a large portion of their time resting on vegetation. Different species are found in different habitats. Adults of some species are found exclusively along hedge rows and edges of woods or in the forests. Other species prefer more open areas with sparse vegetation such as old fields.