Plant lots of trees, they hate elderflower and you can make wine , cordials, jam and champagne . Plant lavender, where you like to sit.
Make sure there is no standing water anywhere, drains, gutters, plant pots, In Tobago they take anyone leaving any standing water really seriously, it community monitored, due to children dying from malaria, so they are really vigilant, no standing water, and Trinidad has a far worse problem because they don't have a policy of no standing water,
Bat boxes, lots and lots of bat boxes, bats are really fussy, if you read up on how to make them (most the advice is what not to do), you will realise that a lot that are offered for sale are pointless, they have to have a totally draft free, warm dry space, with exactly the right measurements for the layout of grooves, and perches, get it right and they will move in, we did a community project, and did a production line building day, a lovely person (bat trust) came along and gave free guidance,
If you get a few bats move in, they make a real difference, they eat their body weight in insects, we also live beside a river, It's very noticeable what a difference our bats make , when we go to similar locations.
just google bat box design, If everyone installed them the bats would sort out all the biting insects for us.
bats live for about thirty years, only start to breed when they are about ten and only have a baby every second year, so they need help, to re tip the balance.
Avon's skin so soft is good, as a repellant.
Crabtree and evelyn use to do a west indian sicilian lemon and limes eau de cologne, that was brilliant.
google Natural Insect Repellent buy the essential oils, and make your own spray, far cheaper.