Now that there's a lot of humidity where I live, I noticed that my boots were starting to stink.
First I tried putting those balls you put in sports shoes in my boots. All that did was put a scent to cover the stink. And the scent wasn't very pleasant.
What I needed to do was either get a mechanical or chemical dehumidifier for the boots.
There's lots of boot driers on the market. Usually these are long tubes connected to a fan. Some are electrical heaters that you insert in the boots. If I was skating so much that my boot sweat was really bad, I'd go for the mechanical solution. I had a friend who poured sweat out of his boots after skating. I gave him a boot drier for his birthday, and it worked fine.
I don't sweat in my boots that much, so I decided to go with a chemical dehumidifier.
My big box store had a sale of Pingi sachets. These are similar to the dehumidifier packs you find in new purses, or sometimes packaged food. Those packs are the sized of a thumbnail. The Pingi sachets start at the size of your fist, and work up.
I threw a 150 ml Pingi sachet into my boot bag, and it worked miracles. Boots stopped stinking 24 hours later. You don't have to put a sachet into the boot, a 150 ml sachet is designed for a chest of drawers, so it can easily handle a boot bag. When the Penguin changes color, just follow the directions and pop it into the microwave for a few minutes. That dries it out and it's ready to go again.
So there's your little skating tip for the day!