Rodents are a big problem here with all the old drains and ally ways. As much as I try it is hard to keep the little bastards at bay. Have had a look on evilbay and there are quite alot of plastic ones around. With regards to the galvanized ones are they air tight?
They aren't air tight. I have whole sacks, and I either zip-seal, or use those crazy tight thick bands that come inside the grain sacks.. so they're basically air tight anyway. If you want the best of both, put an airtight container inside a metal bin/storage system. As long as the outer skin is metal, you should be good.
I can't stress it enough, use a metal one if you have the odd rodent likely to travel past.. because if they catch a whiff of that oh-so-sweet grain, you'll be screwed if they set their radar on you.
Mice & rats love grain!
Amen to metal containers kieran. I got a large steel bin on castors from a local fabricator that makes them up as horse feed bins. The only thing that would keep the rats out. I lost 7-8 plastic lids of my 20 lt pails to rats, they chew straight through them. Plenty of poison around the garage helps as well.
Yeah, I just have one bin that looks like:
(jeez, has anyone lately done a google image search with the term "bin"?)
And I can cram 2x25kg bags, and all my other odds and sods of grain, into one of them. I also bait the garage to keep the bastards out, Talon Wax blocks are good, also the green pellet bait stations are good (with them, if you see green shit, they're dead or will be soon). I've had mice, and rats. Its a freakin curse being next to a national park!
But I'm onto it now, and I haven't had a problem in over 6 months, and my grain is all good.