1 cup grated Castile soap
1/2 cup water
10 drops citronella essential oil
5 drops eucalyptus essential oil
1 T. dried, crushed pennyroyal leaves
Mix the ingredients into the melted soap/water mixture.
With an electric mixer, whip the soap until it has doubled in volume.
Spoon the soap into the prepared molds, pushing it into the molds as best you can (the beating
action cools the mix, so work quickly).
If the mixture has cooled off and thickened so much you can't put it into the molds, hand mold the soap into large balls.