people say build a log pile for a hedgehog but my garden has a wire fence. It is 10 yards by 10 yards. I haven't read a book yet that is positive on the matter.

build a pond plant shrubs etc to encourage birds butterflies etc

Bear in mind that they need food sources -meaning you need to keep feeding them the pests. Beneficial predators follow and/or seek food sources. If you do not have bugs, they will not stay.That being said, consider a bat house (one bat consumes 1,000s of bugs each night). Purple Martins do the same (a bird). Of course, attracting crop-eating birds isn't swift).

Try sonics.

The Mantis is about the best predator around. This time of the year (early spring) is the best time to search the edges of pastures and fields around parks for egg cases. They are found on the thin twigs of bushes. Clip them with pruning tools and hang them by short strings about 6 feet apart around your garden. They will hatch 50 to 100 little bug eaters about the time your seeds germinate. They will venture about looking for food. You will notice that by the end of the season you will only have one or two big fat ones. If you have any short bushes they should have two or three egg cases that will winter over till next spring.