Sun Joe 24-Volt 1-Gallon Chemical Sprayer Kit

The sprayer is very nice and work super good. But.... be careful and be aware please!!! (Read below) We found a mold in our kitchen so I had to spray some mold cleaner formula. My friend recommend me to spray and then 3 days later to spray again. The first time I used the sprayer it was great, super easy to use and very easy to assemble. I could reach all the way back in the cabinet and get good coverage with the spray. However, 3 days later when I tried to use it again I noticed some black thing on the hose. I didn't pay much attention as I thought its probably a dirt and I will clean it when I am done. Well... that almost cost me with my eyes!!! Apparently the black dots were holes in the pipe which I have no idea how its even possible? Was it because of the chemicals I sprayed? How its even possible? It was not bent or anything. Luckily, my eye lid was faster than the sprayer because it was squirting right into my eye. I got lucky here, no joke. I am not sure If I got a defective one but I requested exchange to give it another try since overall I was really impressed the first time. Please make sure to always wear eye protection when using the sprayer.