Membrane activation before protein transfer: which one to use, methanol or ethanol?

Q: Is there any difference which alcohol is used for activation of PVDF membrane before the blotting of proteins to a membrane is done? 

There are two alternatives, which offer different advantages and disadvantages: 

Methanol
More effective at activating the membrane before proteins transfer by blotting and facilitating efficient protein binding

Ethanol 
Less effective to activate a membrane for protein transfer using blotting. 
Can be used if health hazard is a consideration. 

The choice depends upon the objectives in the lab. Efficient protein transfer to a membrane is one of the key factors influencing final outcome in Western blot.