Seven Inventions Made So Well That They Never Needed To Be Improved, Item 6 / 7
Continuous improvement of household items and tools makes our life easier, simpler and more convenient. However, there is a small number of things that, despite the fact that since their invention has been more than 100, they are still preserved in its original form without improvements.
Stick and a small dense grid at the end. It is a primitive but effective device in almost every home and it is indispensable in the summer months to fight flies, mosquitoes and wasps. 'Killer on the fly' was patented in 1900 by Robert Montgomery. He was a public health worker in Kansas and popularized his invention for killing flies to stop the spread of disease. Oddly enough, but such a primitive fly swatter was very effective weapon against shifty flies.