I noticed small webs at the base of my leaves on my rubber tree plants. I’m assuming spider mites but haven’t found anything I can see with the naked eye. I showered the plants with cold water (front and back of leaves) and now they are quarantining. I bought neem oil today. Should I water the neem oil down to prevent plant damage or add soap to it like some say? Looking for the best option without causing damage to the plant! TIA ☺️