Environmental Fly Control. Making the environment as unappealing as possible is the first line of defense when it comes to keeping flies away from your dog. Flies are most active during daylight hours and especially in high heat, so keep Fido inside the house during the hottest times of the day.
Does polystyrene deplete the ozone layer? 1  Initially a portion of polystyrene production was aided by the use of chlorofluorocarbons (CFCs), the chemicals that break down ozone in the troposphere. 2  Though polystyrene manufacturers claim that their products are ozone-friendly or free of CFCs, this is only partially true. The use of hydrocarbons in polystyrene foam manufacture releases the hydrocarbons into the air at ground level; there, combined with nitrogen oxides in the presence of sunlight, they form tropospheric ozone -- a serious air pollutant at ground level.
CFC'S or Chlorofluorocarbons are molecules which demolish the ozone layer. The ozone layer is made up of O3 or ozone molecules these reflect UV rays (harmful ultra violet ligh â¦ t) the CFC'S smash up the O3 into O2 molecules (the type we breathe) these do not reflect UV so we suffer.hlorofluorocarbons (CFCs) are commonly used as the gases used to exchange heat in refrigeration, due to their high volatility. However, when released into the upper atmosphere, their carbon-chlorine bonds are easily broken by solar radiation to release chlorine radicals (unstable chlorine atoms).