Winter Cycling - Toe warmer question

I tried a pair of Grabber toe warmers this morning with poor results. A few questions.

1) Do you mount the warmers on the top or bottom of your foot?

2) Do you place the adhesive against the sock or your boot/shoe?

3) Do you let it come to temperature before putting on your boot?

FWIW, I think (3) was my mistake. These things appear to need air to work and I just put it on immediately followed by my boot.
I removed it when I got to work and it heated up just fine. (in a plastic bag now, so I'll try it again on the way home).

Paul

Im my opinion they are a waste of money, Think wool. Wool socks are your friend

I don't use chemical warmers until it's in the -20F range. I use the Grabber hand warmers, which are cheaper than the toe-warmers.
I put them on top of my toes with no warm-up period. I stick them in a little airtight jar when I'm not riding, one pair can last all week
going to work and back.

+1 on the handwarmers and the airtight jar. They cost less and are a little bigger. I also put them on top of my toes inside my shoes. I found that they drive me nuts if I put them under my foot. I tried to put them between my shoes and booties but they always die out on me. I start them and let them warm up for 5 minutes to make sure they work. I bought a box of them and they get iffy after the expiration date. I'm in Longmont also, if you ever want to go adventuring in the snow PM me.

I'd recommend Lake winter cycling boots. Amazingly comfortable and warm. No more cold toes.

I used chemical toe warmers for the 1st time yesterday. after riding for 2 hrs my feet were in rough shape. I got into a dunkin donuts for food and coffee. after about 20 minutes i remembered i packed some toe warmers in my rack trunk and opened them waited for them to feel warm then put them in my shoes. they warmed up my shoes. then I attached them to the top of my inner sock and put my outer sock back on. I was OK for the ride home. I am now a big fan of these things!