While funny and informative in some ways, please, for the love of your plants do not spray eggs or dairy on them for the sake of keeping deer away. Even if it works you will have so many other problems. Also this book was published before ‘invasive species’ as a concept was even popularized, so please check with your local area to protect the surrounding nature. The United States currently (2023) has a spotted lanternfly issue and tree-of-heaven are their favorite trees, so please don’t plant these even if deer don’t like them.