oh well, no big loss.
Think of it this way - yer $45 (or whatever they charge now) richer.
If you have any problems or questions relating to nutritional deficiencies, infestations, or bacterial/fungal infections just post here - there are hundreds of resources available as close as your local feed store and cost pennies to the dollars being wanted so badly by hi-tech delivery systems.
Every single trunk of tested or dead trees that had pressure injection or even micro-injection using natural translocating whether it be for 'vitamin' or antibiotics or pesticides of one nature or the other have been vivisected and shown to sustain damage to vascular tissue at and around the injection ports. Impairing xylem tissues when trying to "help" a tree is counterproductive, especially when a tree exhibiting symptoms of impairment - is walking a tight rope to begin with.
I'm reminded of the t.v. ads that promote to a patient - not a doctor - the virtues of drugs like prozac that make social presssures and anxieties go away. Pressures and anxieties that may well begin with social and economic ills, not physical maladies. Mauget reminds me just such a PR tactic.
Base-line nutrients, specifically composting elements and hard-core intervention to soil pH like sulfur or foliar applications of bicarbonate are just some examples of treatments that provide non-invasive methods to address most of the classic pathological symptoms indicating severe distress. Soap and water with a touch of phosphorous and honey will both restore chlorotic conditions from the ground up and impair most insect cycles whether it be gypsy moth or long-horned asian beatles, if treatment is issued at the correct time.
Here in Texas the early attempts to address Ceratocystis fagacearum (oak wilt) were so far off base that the disease itself soon adapted to chemical attempts to suppress it, leading to mutations that allowed wilt to become the most costly hardwood epidemic in forest history - first thing they did in their ivy-league wisdom was to misdiagnose the problem because someone years ago published wilt as dying from temperature extremes we have in Texas, but no one ever thought to gauge the heat index inside the xylem, underneath the bark on the north side of these live oaks. They also only sampled and isolated fungal cultures from deadwood, long after the pathogen moved on.
The short story here is don't trust the advice from the experts - being in this case people who never leave the lab. WE may be a bit corn-pone ourselves but we seem to like getting dirty and seeing first hand what really happens out there in the woods.
Copperous (ferrous sulfate) is around $15 per ton and is loaded with macro-micro elements and minerals, nickle, slow iron, molybdenum, copper, etc. Get a fifty lb. sack sometime and spread 20lbs around the dripline of a cholrotic tree, wait a season and take a look six months later - up - where trees speak the loudest.