Abstract: A rigid frame is provided for a conventional air filter as used in ductwork of air handling systems in homes, buildings and the like. The frame includes a first section having a series of apertures and a second section slideably mounted thereto. The second section likewise includes a series of apertures for air passage. The method describes placing a conventional filter in the filter frame and adjusting its length to accommodate the selected filter, the filter can then be placed within the air handling system in a usual seat without fear of dislodgement due to flexing or bending of the air filter when it becomes loaded with dust and debris.

Abstract: An insect repellent can be conveniently prepared from the leaves and branches of Myrica cerifera plant by boiling the same in water. The solution can then be used to dip household pets such as dogs or cats therein to provide a durable insect barrier and repellent for the animals.