[–]19919050?4 points
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THats because contrails only appear in certain weather conditions, and don't appear in others... Has nothing to do with chemicals. They will be back in a few days once the high pressure zone or whatever moves past your state.
[–]19921650?1 point
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Plus they don't spray the entire sky, just parts, parts were they steer clouds and parts were they want chemical to fall. The higher you sprinkle seasoning the more even the coating is.
[–] 19918738? ago
None in Alberta Canada