Smoke residue removal

[BMG50]

Anyone know what removes the smoke residue left over from a fired British army modern smoke gren. To preserve a smoke to stop it decaying you have to rid the soot from inside either poke it out or oil soak it or remove top but the plastic lever and top is coated after use with a hard wax residue difficult to remove, tried a number of solvents but to to avail. Any one found a way.

[batonroundcollector]

Will the residue really corrode the body of these, and if so is this true of all smokes of a similar design to modern Brit ones (unsure which metal is used for the body)?

[BMG50]

Most smoke fired leaves a soot, if cleaned and dealt with can stop further deterioration. The residue wont corrode but the soot inside will absorb moisture, even worse if they have been out in the rain. Some are worth saving as the markings can sometimes be good. I have tried white spirits, cellulose, WD and meths.