What additives are commonly blended with WPC to improve insect resistance in outdoor flower boxes?

When it comes to outdoor flower boxes made from wood-plastic composite (WPC), ensuring insect resistance is crucial for longevity and aesthetics. Commonly, additives such as borates, zinc oxide, and copper compounds are blended with WPC to enhance its resistance to pests. Borates are particularly effective against termites and wood-boring insects, while zinc oxide provides a dual benefit of UV protection and pest deterrence. Copper compounds, known for their antimicrobial properties, also help in repelling insects. These additives not only improve the durability of WPC flower boxes but also ensure they remain pest-free, making them an ideal choice for outdoor gardening. By incorporating these additives, manufacturers can offer eco-friendly and long-lasting solutions for garden enthusiasts.