just got back from englethwaite hall CC site after a 8 night stay and the results are,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,one chem did the job as good as our local dealers own brand, only thing was the "chemically frangrant bluey smell" was so much stronger than the rest, couldn't leave the cassette open very long, but did the same job (pardon the pun), i suppose its just the same as the rest but very concentrated, as for the 40 doses, maybe, if you could control yourself as to the measured dose, personnally i couldn't, i thought "thats not enough" and put a larl bit more in, but did an experiment over 2 days with it. 1 day used dealers and next day one chem. and truthfully,, both the same, like i said before, if you could control yourself as to dosing the correct ammout i suppose one chem would come out best because it would go a lot further, but as for doing the job (pardon the pun again) no better than any other product. oh, and still never got the balls to put it in the flush, still not convinced it wont stain. i hope PARKSY i still dont sound like a salesman. ha ha