is an incapacitant
, used when less lethal
force is required, consisting of various extremely tacky and/or tenacious materials carried in compressed form with a propellant and used to block, entangle, and impair individuals. A National Institute of Justice
-funded project at Sandia National Laboratory
developed a "gun" which could fire multiple shots of sticky foam. After testing the product for corrections applications, Sandia provided the U.S. Marine Corps Operation United Shield
with sticky foam guns and supporting equipment to assist in the withdrawal of UN Peacekeepers
. Problems with this technology include: the serious risk of smothering the subject; skin clean-up (the foam may not be toxic, but solvents are often harsh); "gun" clogging; targeting and firing; and gun cleaning. The Marine Corps reportedly successfully used the sticky foam guns as part of the operation in Somalia.
Scott, Steven H.; "Sticky foam as a less-than-lethal technology," p. 96-103 of Proc. SPIE v. 2934, Security Systems and Nonlethal Technologies for Law Enforcement, John B. Alexander, Debra D. Spencer, Steve Schmit & Basil J. Steele, Eds.