The house we are renting has an MTI whirlpool tub. The first time I used it, one jet didn't expel anything and I couldn't turn the nozzle. Now, there are 3 of the 6 jets not working for some unknown reason. Being a renter, I have no idea how often it was used before or what was used in it. Do I need to disassemble the jets to attempt to clean them? I hope not, as I've never done that before. Will the commercially available cleaners do the job? I don't want to use bleach as the bathroom is not well ventilated. Thank you for any help you may give.

Contact the manufacturer and ask them what chemical agents they recommend to remove the deposits from the orifice