You cannot store your contacts in saliva. Nor can you clean your contacts with saliva. The salivary fluids will bring bacteria or other impurities to your contacts, thus infect your eyes. So for the health of your eyes, you should not store your contacts in saliva. If you run out of contact lenses solution, you should buy another one immediately. The contact lenses solution can moisten your contact lenses and what is more important is that it will sterile your contact lenses as well as remove the protein on the surface of the lenses. If you cannot buy a contact lenses solution, you can use sterile water to store the lenses. Homemade saline water is not recommended, for the improper portion of water and salt may damage your contact lenses as well as your eyes.