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· Carpenter ants vary in size from ¼ to 1/2 inch; they do not eat wood like termites, but they will excavate damp wood in your house to create galleries where they nest.
How far ants will travel for food depends on the species, but it’s generally within about 25 feet of the nest. The colony is almost always found outside, so look around to identify where they ...
The curve for E. coli is given in the figure, with the most effective UV light having a wavelength of 265 nm. This applies to most bacteria and does not change significantly for other microbes. Dosages for a 90% kill rate of most bacteria and viruses range between 2,000 and 8,000 μJ/cm 2 .
According to the FDA, E. coli is often innocuous. You might even have some living in your gut. But there are different strains of E. coli, and some can be potentially dangerous. This recall ...
Microwave signals are normally limited to the line of sight, so long-distance transmission using these signals requires a series of repeaters forming a microwave relay network. It is possible to use microwave signals in over-the-horizon communications using tropospheric scatter , but such systems are expensive and generally used only in ...
Escherichia coli O157:H7 is a serotype of the bacterial species Escherichia coli and is one of the Shiga-like toxin–producing types of E. coli.It is a cause of disease, typically foodborne illness, through consumption of contaminated and raw food, including raw milk and undercooked ground beef.
Finally, if you really want to make sure you don't open a new bag of flour to find it crawling with uninvited friends, yes, he assures, the freezing hack works: "Wheat flour can be frozen for one ...
Newer synergous, low-alcohol formulations are highly effective broad-spectrum disinfectants with quick contact times (3–5 minutes) against bacteria, enveloped viruses, pathogenic fungi, and mycobacteria. Quats are biocides that also kill algae and are used as an additive in large-scale industrial water systems to minimize undesired biological ...