cleaning reagent bottles before refilling

[abfab]

Does anyone do this and/or is it necessary?
I try to buy the ones I use often in bigger bottles and am careful that the tip does not touch anything. Some of my Taylor bottles are four years old.

 

[Perpetual summer]

I would think a good rinse with distilled water would be enough. Tap water might leave residue of chlorine, calcium, etc....... Washed with a soap or cleaner residue from that might effect the reagents a little. Maybe best to leave it alone and just refill.