I borrowed a powered snake style drain gun for some toilets and shower stalls, from an HVAC guy who said that liquid drain cleaners were next to useless. The short version is that the drain cleaner succeeded where the snake gun failed. After a while, I took a look online and saw some pneumatic drain guns powered by BB-gun style CO2 cartridges. Are any of these better than any other? If not, are any of these more appropriate to domestic drains?
Clearly I would prefer not to add liquid drain cleaner, containing god-knows-what-all, to the municipal water supply even though I know the manufacturer and the city say it's safe. The only thing I haven't tried yet is the pneumatic gun. Can it replace liquid drain cleaner?