Polyculture is a great way to deal with pests but it isn't just about confusing or distracting pests. Often people plant flowers mixed in with their other plants. These flowers can support beneficial insects that help you by eating the pests. This way your not only relying on pests being confused but you're also helping to increase the number of predators so the pests that do show up are more likely to get eaten.
I also like to take this a step further and plant mini-meadows
close by my polyculture garden beds. One way to do this is to plant flowers all around the boundaries of your garden--you can even plant shrubs and/or trees on the northside (south side in the southern hemisphere) of your garden. I like having hedgerows close by my garden beds--and ones planted on the northside can also block cold northern winds which can improve your growing conditions. And if you've got a large garden with lots of defined beds you could set aside every 4th or 5th bed as a mini-meadow for attracting and supporting beneficial insects. Mixing in native flowers and other native plants will provide even more benefits since they support a wider range of insects. I've mixed in native onions and native checkermallows (all edible) in my kitchen garden and I'm looking at adding others.
By having a diversity of habitat across the board you can support a large number of beneficial insects and other predators that can help keep your pests under control. That combined with planting your food crops as polycultures (with flowers still mixed in) can really do a lot to reduce your pest issues. But I wouldn't rely on the pests being confused as the only solution--supporting the predators too is a key part of this method.