I live in Las Vegas, and have a Palo Verde tree in the front. It had gotten infested with caterpillars...they were all over it...I called my landscaper and they told me to get Bayer systemic plus feeding and pour it at the base of the tree based on trunk size in inches( 1 ounce per inch in gallon of water). It was 46 inches around, but I only had a 32 oz of the bayer so I just did that. It said takes 1 week to 3 months to work so I asked her what to do now to get rid of them and was told to get the Bayer Spray. I told her I had hummingbird feeders and she said take them down and put them back up when it dried. So I sprayed the tree tonight and came back in and dont know what made me do it but I read the Q&A on the Amazon product page...and I AM DEVASTATED. Some people are saying what I just did will kill bees and harm the hummingbirds, others say it won't, but I wen ton google and I see posts from groups saying that it will and I am SICK and so upset and now am powerless.. I have 6 feeders around my house front and back and fountains etc in the back. I had to save my Palo tree it has been through so much in 13 years and I couldn't let this infestation kill it so I just leapt into action and now I am dying inside because I unknowingly will be harming the bees and Hummingbirds when the Palo blooms its yellow flowers . It's August, they may not bloom again until next Spring which will be April or May...8 months away but this bottle says lasts up to 12 months... I pray not having enough of the product and not putting any more on will lessen the risk 8 months from now. I AM SICK TO MY STOMACH I WOULD NEVER KNOWINGLY HARM ANY CREATURE. I AM SO ANGRY WITH MYSELF. I went out of my way to get bowls that would not harm or have any chemicals in the heat and sun of the Vegas summers, and now I'm going to harm them trying to save my tree and with my IGNORANCE.