Outdoors it can be a little more difficult and require much more effort. But if your using preventive products like predatory bugs, beneficial bacterias and fungi, biologicals, and essential oils and "target" plants around the garden, it's not impossible to achieve clean product outdoors. We do it every year. Without pesticides!! Do we have issues, absolutely, do we say "oh well, it's outdoors and we can't stop it"? Absolutely not!! We step our game up and eradicate unwanted pests because that's what you do as a grower with standards who will not accept tainted material/meds. Best of luck to everyone.
Heres how I deal with bugs...