If you have a cockroach problem, it is often necessary to apply an insecticide in addition to nonchemical measures to eliminate an infestation. Insecticides, however, are much more effective when their use is combined with sanitation, harborage reduction, and other nonchemical efforts.

It is often very challenging to treat cockroaches. In most cases, it is best to hired an experienced pest management service (pest control company) to treat them. They have the necessary experience and tools to successfully eliminate these pests from your home. However, your cooperation with a technician in improving sanitation and reducing harborage areas is very important in the management of cockroaches.

If you attempt to treat a cockroach problem yourself, it is first important to determine where they are most common. You can do this by setting out sticky traps (purchased under such names as Roach Motel or Roach Trap). Distribute the traps in a variety of locations, especially in areas where cockroaches have been sighted. Be sure traps are placed tightly against walls or objects so cockroaches can not go around them. Remember that cockroaches prefer warm, moist areas near water sources. Record the number of cockroaches trapped and apply insecticides near the traps with the largest catches.

There are several options for insecticide treatment of cockroaches, baits, dusts (powders), and sprays (liquid or aerosol).

Cockroach baits are typically available in ready-to-use plastic child-proof containers. Common active ingredients include abamectin, fipronil, or hydramethylnon. Place them in areas where you find cockroaches following label directions. An advantage of baits is that they can be placed in very precise locations which avoids general broadcast applications. However, baits act somewhat slowly and results may not be easy to see when they are first used.

Sanitation is very important to reduce cockroach infestations. Cockroaches need water and food to live. By limiting their access to these resources, you reduce their ability to survive and reproduce. It is difficult to make your home and other buildings completely unacceptable for cockroaches, but you can minimize an existing infestation when improving sanitation.

Cockroaches also need favorable places to live to successfully live and reproduce. You can reduce cockroach numbers when you eliminate favorable sites.

Physical removal. Vacuuming can remove a significant number of cockroaches and egg cases from the environment and can be quite effective when combined with other methods. When possible, use vacuums with a high efficiency particulate air (HEPA) filter to reduce cockroach debris that may become airborne.

Sticky traps help capture cockroaches but generally do not capture enough insects to be practical to help reduce a cockroach problem. However, they are a useful management tool to monitor for the presence of cockroaches.

Cold Treatment. You can cold treat small items, such as toasters, clocks, or boxes, to kill cockroaches that may be infesting them. Put the item in a plastic bag, close it up, and put the bag in a freezer. In winter, you could set the bag outside when temperatures are at or near 0 degrees F. Leave the bag in the cold for 5 days. After that, clean the item well before bringing it back into your home.

If you suspect cockroaches may have been brought into your home, set out sticky traps to monitor their presence. Place sticky traps so they are tight against edges, e.g. where walls meet floors (fig. 8). Place them in areas where cockroaches are likely to occur, e.g. in cupboards and around refrigerators, stoves, and sinks.

Does water freeze at a higher temperature in a vacuum? Why? Where can I find the relationship of the boiling and freezing point of water relative to atomospheric pressure?
The lower the pressure, the lower a liquid's boiling point is. That's why water boils much faster at the top of a mountain than it does at the bottom.


3. Boiling blood

In space, there is no pressure. So the boiling point could easily drop to your body temperature. That means your saliva would boil off your tongue and the liquids in your blood would start to boil.

All that bubbly boiling blood could block blood flow to vital organs. That in itself could kill you. And if the bubbles pass through your heart, it could cause a heart attack.

The bubbling would also probably burst some capillaries, so you could find yourself covered in splotchy bruises.