Contact insecticides offer safety advantages in homes, while residual insecticides are useful when the insects are a constant problem. Is this statement true or false?

The statement that contact insecticides offer safety advantages in homes, while residual insecticides are useful when the insects are a constant problem, is indeed true.

Contact insecticides work by directly contacting and killing pests upon application. Because they do not persist in the environment for long periods, they are generally considered safer for use inside homes, particularly in areas where children or pets might be present. The short-lived nature of these insecticides means that the risk of exposure is reduced after the product has dried or the application site has been ventilated.

On the other hand, residual insecticides are designed to remain active for an extended period, allowing them to control pest populations over time. This makes them particularly useful in situations where insects are consistently problematic, as they can continue to kill pests that come into contact with treated surfaces long after application. Their lasting effects can effectively help with infestations that require ongoing management.

Overall, the statement accurately reflects the functionality and safety implications of both types of insecticides in various environments, supporting the assertion that it is true.