I have two large oak tree stumps. Will drilling them and applying sugar decompose them? Because of their positioning, I cannot grind them out. Is there anything else that will speed the effects of decamp..i.e. some type of acid? plain urea etc.

I have two large oak tree stumps. Will drilling them and applying sugar decompose them? Because of their position, I cannot grind them out.

Is there anything else that will speed the effects of decomposition, for example some type of acid, plain urea or something else?