PICC dressing change - clean the tubing?

[LesYou]

When you change a PICC or midline dressing, do you clean the tubing also? Specifically, the tubing from the insertion site to the hub. If so, what is your method? My company's policy does not mention doing this and most of the resources I've found on the internet do not mention it either. It seems to me that cleaning the tubing would help prevent infection.

[chare]

In my practice I clean everything that the dressing will cover. 

From the Royal Children's Hospital Melourne Central Venous Access Device Management page:

Quote

9. Clean skin with Chlorhexidine solution in a circular motion from the centre to the outer area 5-10cm, three times and allow to air dry.  
If patient < 1500gms and < 1 week age wash skin with Chlorhexidine 1% Aqueous solution.
Ensure any visible debris or residue is scrubbed away.