R
Rookery
I see the theory but in practice, my labourer cleans out the first bucket while I'm using the second one. That's what he does, as well as knock up mixes, fetch tiles, remove rubbish, put kekkle on etc etc. In other words, cleaning buckets costs me nothing so I wouldn't buy them. I'm sure that some would buy them but not sure you'd get the volume to get the cost low enough.