Should I further encapsulate existing classes

[xxlwsxx]

For example, when creating objects
from existing classes developed by others:

Class_Custom* pMyObject1 = new RefClass1;
Class_Custom* pMyObject2 = new RefClass2;
pMyObject->function1(...);
...

After using, I would need to manually delete it, say:
delete MyObject1;
delete MyObject2;

Question is should i further encapsulate these
with a higher class?
for example, to provide auto cleanup?

Thanks and regards

LWS