Tanglefoot

Tanglefoot is a barrier intended to impede the progress of an enemy or agricultural pest.

Common tanglefoot barriers used in gardening and horticulture involve a very sticky substance, which is smeared on plant stalks or branches to trap or impede insects or other pests. Some bird repellents also use tanglefoot because birds are generally reluctant to perch on a sticky substance.

In military fortification, Tanglefoot is a type of wire obstacle or entanglement, generally made from barbed wire intended to impede enemy troop movement.