What the worst type of polish to use?
Pledge, Endust, etc. feel really great when you put them on. What is bad is: if you ever want to refinish the piece, then they are not such good polishes as they have silicone in them. Silicone will go though lacquer and many other finishes and lodge permanently in the wood. (See #22 on Fish Eyes) Silicone repels finish and in the event you ever need to touch up or refinish it can cause “fish eyes” (little dimples in the finish where silicone is rejecting the finish). It is impossible to completely remove this without destroying your furniture as it goes deep into the pores.