I got a problem here...

[Magus]

I was looking through my canned stuff for some corned beef and all my top cans have this black, rust-like crap on them, it wipes off, but it stains the cans, what is this gunk? this has never happened before!
how do I stop it?

 

[Caribou]

There is black rust and red rust. The blueing on your guns is a controlled rust. You can put a thin layer of food grade oil or paraffin on your cans, before they start to rust, it helps. Keeping them dry and at a rather constant temperature helps.

Cans can rust from either the outside, or the inside. That is why we look for bulging cans or rust before we open them, and listen for an intake of air and inspect the inside of the can after we open them. Surface rust is not an issue but it can progress through the metal rapidly. Once the can is punctured, by rust or other means, it can become deadly.

I have seen rust blisters form on the inside that were just a dot on the outside. Needless to say those cans got tossed.

 

[Tacitus]

I had this happen to a bunch of cans...it was gooey, not like rust. I figured it was botulism bursting out of the cans, and so I through them away. I was careful not to touch the stuff, although they did stain a shelving unit I had. Am I way off base?

 

[Magus]

I checked, these are from some outside source and stain the metal, they wipe right off, the stuff stored under the sink has them too!

 

[Dani]

Is there humidity in your store/stockroom?

 

[Caribou]

I had this happen to a bunch of cans...it was gooey, not like rust. I figured it was botulism bursting out of the cans, and so I through them away. I was careful not to touch the stuff, although they did stain a shelving unit I had. Am I way off base?

I've had black goo from holes in the can and had that black goo on the outside of cans below them.

I like Tattler lids. Unless the seal goes bad the glass nor the lid will rust through so the food should be fine for many decades.

 

[Pearl]

MOLD!

 

[Weedygarden]

My guess is that it is mold. That is something I do not mess with, I toss it in the trash.

 

[Pearl]

MOLD!

Just wash them, but mold is in your Winnie!! Sorry to all the new members who don't know what we are talking about!!

 

[Magus]

Yep. I have spots of black mold right near my storage area, time for some Clorox and a bit of carpentry. how is it getting into my storage area?

 

[Pearl]

Yep. I have spots of black mold right near my storage area, time for some Clorox and a bit of carpentry. how is it getting into my storage area?

Mold spores can spread in the air, that's how they make you sick!

 

[Magus]

Right. EXTRA BLEACH and carpentry.

 

[theheathen13]

I have found that storing onions and potatoes in the same area you will get a black mold. Did this happen at this time?

 

[Peanut]

@Magus As i know all to well (across the state line), we have a humidity problem here in the south. We've had tons of rain this summer. I've been battling spots of mold. An air conditioner helps. My air fryer and oven, gas cooktop... all dry the air. When my a/c needs help with humidity I'll purposely use an oven. Better to be hot than slimy and hot.

Next I keep everything clean. It's a constant battle to keep out any clutter, especially clutter. It blocks air flow. This activity keeps dry air moving. I have a couple spray bottles with water/clorox mix to hit spots. I have a heavy duty construction fan to move air also.

And... on the west side of the house are 2, 12x12 rooms that are closed off. Gets a lot of sun, has the gas clothes dryer, washer, freezers, hot water tank (also has a big window fan). The air back there stays fairly dry. When its really humid at my end of the house I'll push the dry air from back there with big fans.

I have to crank the a/c for a bit because it gets hot... but this keeps away the bits of white mold that seems to like the cabinet doors under the ktch sink and vanity, near water, very humid!!

But no matter the type of mold, git rid of it, period. Not good for people to live with it.

 

[ssonb]

I have discovered that if you dissolve the plain Oxy clean type detergents and apply to molds and mildews it works plus it is safe to use around pets and good clothing.