In general, electrons are much more free to move around inside a substance than protons, and it is the flow of electrons to or from a substance which allows the substance to become either negatively charged or positively charged.

Container traps lure flies with bait and make it impossible for them to leave. Some container traps are reusable with bait refills, like the Victor Fly Magnet Reusable Trap With Bait: others need to be thrown out once full. A zapper, while not technically a trap, lures insects with its ultraviolet light and eliminates them with an electric charge, like the ASPECTEK 20W Electric Indoor Bug Zapper. Atoms have an equal amount of protons and electrons. Each electron has a negative charge and each proton has a positive charge. These two charges are equal, which means that each atom has zero net charge. As a result, it is electrically neutral. Once the eggs turn into nymphs, they’ll live underground for 1-3 years. Did you know that ants carry the eggs of the Spiny Leaf Insect down into their nests, protecting them from predators? When they hatch, the babies look and behave like ants until they can escape the nest and climb into a tree. Nymphs will eventually molt (form a new skin under the old one) into adults, revealing a green or brown, slow-moving leaf mimic. Females live for another 18 months or so, while males only live for 6-8 more months. Anatomy The Victor Fly Magnet is a tidy container that uses bait to lure flies under its tented lid and into the depths of its glass chamber. The flies drown in the jar, which can hold dozens of winged insects. The scent of this compact outdoor fly trap also repels stinging insects such as bees and wasps. The bait has a strong fermented food smell, which might make it better suited away from outdoor dining areas.When a substance has a negative charge it has an excess number of electrons. That is, the number of electrons in the substance is greater than the number of protons. When a substance has a positive charge it has an excess number of protons. That is, the number of protons in the substance is greater than the number of electrons. Simple and aesthetic in design, this bug zapper is a breeze to set up. You can hang it using the included chain-and-hook set, or simply set it on a hard, even surface, as long as an outlet is nearby. We also found the upkeep to be easy as well, with a removable plastic tray at the bottom that is dishwasher-safe. We appreciatethe ease of use and the self-cleaning electric grid. One thing to note is that this zapper is loud and very bright so if you are using it indoors, you will want to put it in an area you can avoid. Cantle, John (1982). Atomic Absorption Spectrometry, Volume 5. Elsevier Scientific Publishing Company. p.385. ISBN 0-444-42015-0 . Retrieved 12 December 2011. No matter the type, all fly traps offer something attractive to the fly to ensure entrapment. This might be color, scent, bait, UV light, or vacuum. All are effective, though some flies are more attracted to carbon dioxide (gas breathed out by most mammals), and fruit flies favor fermented fruit. Like charges repel, which means that electrons repel other electrons and protons repel other protons. In addition, unlike charges attract which means that electrons and protons are attracted to each other.

If you’re looking to teach the Australian Curriculum in Biological Sciences for F-2 students, look no further than these smashing educational materials!Fish, Jim (29 March 2004). "BBC NEWS | Europe | Unearthing Hungary husband murders". news.bbc.co.uk . Retrieved 10 December 2016. Your mileage varies greatly with the fly trap you choose. Typically, light bulbs in light traps need to be replaced less frequently; traps using bait require more daily monitoring and cleaning. Glue traps are a nice middle ground, only needing disposal when full. They cost minimal money to replace. At Rentokil, we offer a wide range of DIY fly killer products including fly traps, sprays, papers and plug-in fly control. Many of our products are insecticide-free and offer long lasting protection against flies and other flying insects in your home. They are available from all leading national retailers, including supermarkets, DIY stores, garden centres, trade centres and hardware stores. Be sure to position the trap at least 20 feet from living spaces. The manufacturer says the bait effectively lures a variety of flies. Like similar traps, it does produce a strong odor. However, when the trap is full, just toss it into a plastic bag and tie it off, then throw it away. You also can buy bait refills if necessary.