TBH ive reduced mine in local housing esates, im on already - just because of my new pole and brush, im that much quicker, i can get more done, so reducing my prices hopefully give me more custom.
However, i wouldnt be so low as to directly undercut another operator knowingly. If it happened without me knowing then i cant help that..
If i go canvassing i do ask if they require or already have a WC.
Least you are still in the area en mass, and will give you a chance to increase ever so slightly should they wish to come back. (Sorry ive already replaced you with someone else- pay a bit more, i'll drop someone to include you again

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Yes your prices wer shockingly low and been doing it 10 years.. wheres the loyalty there?? I mean if you had only been doing them a few months or something fair enough but 10 years and then drop you, that must hurt!