OC Spray Patterns: FOG - Best for outdoor use & multiple target capability. CONE - Best all around pattern, more of a concentrated patters than FOG. STREAM - Good for indoor/outdoor use & windy conditions, pin-point accruacy. FOAM - Perfect for indoors, pin-point accuracy, little to no cross contamination. Copyright 2010 Police Supply Online providing Police Equipment to over 300 Police, Federal & Military Law Enforcement Agencies around the world.