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.
A cup of acetone is enough to dissolve an entire bean bag worth of styrofoam beads! Styrofoam is made up of polystyrene foam. When the polystyrene dissolves in the acetone, the air in the foam is released, causing it to look like you're dissolving this massive quantity of material into a small volume of liquid.You can see a less-dramatic version of the same effect by dissolving other polystyrene items in acetone.issolving Styrofoam or another polystyrene product in acetone is a spectacular demonstration of the solubility of this plastic in an organic solvent, plus it illustrates just how much air is in the Styrofoam.