oregon forestry laboratory christmas tree preserver oregon forestry laboratory oregon forestry laboratory #1 rated christmas tree preserver. documented after testing tree preservers vs. water by a major washington university & the national christmas tree assn. water 33.2% needle loss - our preserver only 10.5% our trees were judged “best in overall quality“ the #1 problem in our industry is tree stands going dry! our preserver protects the stand from going dry the first 2 critical weeks & beyond! nutrients are documented to keep needles on & retain freshness longer. child & pet safe safe for, bees, birds, animals, streams & humans - completely biodegradable you will receive 1 (one) brand new packet of the best possible tree preserver in the business!! this christmas tree preserver is top rated by local university studies. one packet will be all you need to keep your tree fresh and help keep the needles on the tree longer. this product is people and pet friendly and will keep you from having to constantly add water to the tree stand. manufactured and packaged in the united states. easy to follow directions are on each packet. simply pour contents of packet into the tree stand and add water, that simple! bulk orders are available