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Wasps are aggressive to protect their nests. Although they are deemed aggressive, they only act that way when they feel their nests are threatened. They can also act aggressive when there is a lack of food available. Most wasps will leave you alone if you stay clear of their nests.

Roach spray usually starts working almost immediately on contact—within seconds to a few minutes. However, if it's a residual spray designed to keep killing over time, it can take hours or even days to fully affect roaches that come into contact with treated surfaces. For larger infestations, it may take at least a week to see a noticeable drop in activity, since not all roaches are exposed at once.

The best termite treatment depends on your specific infestation, home, and budget. According to the Environmental Protection Agency (EPA), the most common professional treatments are soil-applied barrier treatments, like liquid termiticides, and termite baits. Bait stations are placed in the soil and work by moving poison back into the colony to kill the queen. For infestations that haven't fully taken root, barriers and targeted termiticides are often the most effective options. Additionally, preventative measures such as moisture removal and installing physical barriers to protect vulnerable wood are important, particularly during construction or remodeling. It is best to work with a termite professional to determine the right treatment for your situation.

Whether rain affects a professional mosquito treatment depends on the treatment type, the quantity and intensity of rain involved, and how soon after the treatment it rains. Larvicides, for example, are often applied to water sources where mosquitoes lay their eggs, so it won’t matter if it rains. Some barrier sprays need sufficient time before the next rainfall to penetrate the surfaces properly and do their work.