What can you do if it's cheap but doesn't do its job... The racket has 3 surfaces. Two external and one internal... if the mosquito lands only on the external surfaces, it can bother you for hours... It will only be hit by the current if it passes through the external surfaces and manages to touch the internal one, where it will be hit by a very small amount of electricity... Specifically, a mosquito entered the internal surface AND IT DIDN'T DIE... I had to move the racket with the purpose of making (the mosquito) touch more sides (as the surface is meshed) of the internal surface in order to hit it with the current multiple times. It's not worth it in my opinion... I bought 3 and all 3 are the same, take one and hit the other. Terrible build quality... If you are an electrician and want to add a capacitor with higher capacity, then YES, get it because it's cheap and upgrade it to your needs...!!! Good luck.