Thrips infestations are easily manageable with good housekeeping. Likewise, plants should be regularly inspected in areas where the leaves meet the stems, as these areas tend to be where females lay eggs.
Green mulch tends to attract Thrips, so should be avoided if your plant has had a previous thrip infestation.
Sticky traps can be used as a cheap and easy method for light infestations. They're also an effective means of monitoring infestations. Thrips seem to be more attracted to the colour blue as opposed to yellow.
Gently spraying plants down with a hose to remove any eggs and insects will help to remove pests outdoors.
Due to their small, slender builds, thrips can be difficult to control using biocontrol. There are some species of predatory mite which can be useful in greenhouse conditions, such as Amblyseius species, Hypoaspis species and Macrocheles robustulus (Mighty Mite). Pesticides should not be used in conjunction with biocontrol.
Ladybugs and lacewing are key predators of thrips and work exceptionally well in a greenhouse setting. You can catch ladybirds and release them into your greenhouse or garden area.
You can attract beneficial insects to the garden by keeping some areas wild while planting a good selection of flowering plants. The addition of insect habitats to your garden (e.g. log piles, bug boxes, hotels, flower baskets and herb gardens) can help make gardens more attractive to predatory insects.