If anyone--FJL? John G?--is looking for a topical product for muscle cramps or pain relief in general, I can recommend two:
Arnica Rub--a non-greasy cream that works well and has no odor
Magnesium oil (or gel)--absorbs easily, is very good for muscle cramps, and has no odor. I'm currently using MgSport Recovery Gel, available on Amazon.