A friend of mine has been with PlumbLocal for a while and it's perfect for him: the amount of sales, marketing and admin work he has to do is significantly reduced (he's not a big one for paperwork!) and he's finding it much easier than he did when he ran as his own business 100%.
I can see...
You can try a chemical unblocker, but there's a risk of damaging your pipes. Most rodding kits sold to the public are useless, so if the chemicals don't work I'd suggest calling in the experts.