
 Animated sprites not disappearing after cycle?

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Screenshot. Not sure what causes this...
Code:
AddEffect = MOSParticle
   PresetName = PoisonCloud
   Mass = 0.3
   GlobalAccScalar = -0.24
   AirResistance = 0.1
   RestThreshold = -1
   LifeTime = 400
   Sharpness = 0.1
   HitsMOs = 1
   GetsHitByMOs = 0
   SpriteFile = ContentFile
      FilePath = Base.rte/Effects/Pyro/Smokeball01.bmp
   FrameCount = 15
   SpriteOffset = Vector
      X = -14
      Y = -14
   AngularVel = 5
   Atom = Atom
      Material = Material
         CopyOf = Air
//   TrailLength = 0
//   Framerate = 0
   ScreenEffect = ContentFile
      FilePath = Base.rte/Effects/Glows/GreenSmall.bmp
//   EffectStartTime = 0
   EffectStopTime = 200
   EffectStartStrength = 0.9
   EffectStopStrength = 0.3
I've tried messing with most of the values in numerous combinations.. does anyone actually know a solid way to clear the sprites once they're done their cycle? If not, no big deal. (Yes, the screenshot is a marine holding a tribal blow dart gun 

 )