My favorite products are ones with clotrimazole, and I prefer spray formulations to creams or ointments, as sprays are less messy and easier to apply on dogs and cats. (web-dvm.net)
I used to use nystatin ointment or miconazole cream (15 grams) as part of the mixture, and these work well enough, but I believe the use of powdered miconazole (or even clotrimazole powder) gives better results. (breastfeedingmums.com)