Hi - has anyone used generic gas canisters rather than the Goodnature gas canisters when re-gassing their A24s? Have seen on the Goodnature website that the Goodnature gas has silicone in it to lubricate the seals and keep the trap working - and if you don’t use this then the warranty is void (but the warranty only lasts for 2 years). Have heard that generic 16g gas canisters can work just as well for more than half the price, but would like to know if anyone has tried a generic canister and if they caused any issues?
I use bike inflation canisters from Torpedo7. They work fine and no issues and add you say, about half the price. You could use a bit of silicone spray on the necks if you wanted.
Same for me. Have used generic canisters for some time. I have not been able to discern any difference except price. I suspect earlier versions of the orings in the valve connection for the canister needed the silicon to stop leaks. I have not noticed any residue on the goodnature canister threads when installing. If your trap is our of warranty they are worth trying.
I use these, mainly because they are cheap. They seem to work OK. Bike cylinders work fine too, including the 32g variety.
http://www.ecocleaningproducts.co.nz/search.php?keywords=co2&imageField=
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Maybe alternate a genuine canister in every so often. I don’t know how long it would take for the trap function to degrade without the lube.
…or lube the cartridge threads with a silcone or plumbers lubricant? That’s what I do. Not sure if it makes any difference though 
Does anyone know of an online site giving how one can service the A24 trap as mine is presently leaking gas and am concerned that I need to replace some rubber seal or will just lubing the cartridge thread do it?