A natural tick deterrent for human use, to try this year: 1 part tea tree oil to 2 parts water in a spray bottle. Tea tree oil when diluted can also be used on dogs (not kitties) OVER 15 lbs. I would suggest 1 part tea tree to 4 parts water at min.
Mosquito Repelling Creeping Lemon Thyme Plant -The high citronella oil content of this hardy, easy-to-grow perennial plant is more potent than any other mosquito repellent plant tested. / Could be great for the deck.
Royal Empress Tree - grows ft/year Empress Tree Facts: Grows up to 10 feet or more in the very First Season Rich lavender flowers that look like Orchids but smell like Jasmine Grows as far north as Canada and as far south as Mexico