To Keep out Mosquitoes and Bats
If a bottle of the oil of pennyroyal is left uncorked in a room at night, not a mosquito, nor any other blood-sucker, will be found there in the morning. Mix potash with powdered meal, and throw it into the rat-holes of a cellar, and the rats will depart. If a rat or a mouse get into your pantry, stuff into its hole a rag saturated with a solution of cayenne pepper, and no rat or mouse will touch the rag for the purpose of opening communication with a depot of supplies.
Source: The White House Cookbook, F.L. Gillette
Preparation for Rough Skin
A delicate and effective preparation for rough skins, eruptive diseases, cuts or ulcers, is found in a mixture of one ounce of glycerine, half an ounce of rosemary-water, and twenty drops of carbolic acid. In those dreaded irritations of the skin, occurring in summer, such as hives or prickly heat, this wash gives soothing relief. A solution of this acid, say fifty drops to an ounce of the glycerine, applied at night, forms a protection from mosquitoes. Use the pure crystallized form: it is far less overpowering in its fragrance than the common sort, Those who dislike it too much to use at night, will find the sting of the bites almost miraculously cured, and the blotches removed by touching them with the mixture in the morning. Babies and children should be touched with it in a reduced form. Two or three drops of otter of roses in the preparation will improve the smell so as to render it tolerable to human beings though not so to mosquitoes.
Source: The Housekeeper’s Friend: A Practical Cookbook