I decided to buy a Tide-to-Go pen to keep in my purse because I am always spilling one thing or another on myself, especially my t-shirts and I figured it might just come in handy. The size is great. It fits easily in my purse and isn't really any bigger than some fat pens I've had before.
I don't think that it works quite as well as Tide would want you to believe. It's very easy to used and I have tried it on several different stains and it just works so-so. For basic food type (non-greasy) stains, it works okay. It works good enough to minimally conceal a stain that might otherwise be very noticeable, however, I have not yet gotten it to completely take out a stain unless it was very light and mild to begin with. The smell is okay, a little wierd, but not anything too strong or pungent.