These pillows are for dogs.
Source: Glen Brook Farms Herbs and Such
2 parts pennyroyal
1 part thyme
1 part wormwood
Herbs may be cut or whole; construct a pillow for your pet to sleep on and then stuff it with the pennyroyal, thyme, wormwood. This makes a nice gift for those favorite dogs in your life. These herbs help to repel fleas naturally and without harsh chemicals.