Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Is The Heaven Fresh HF 707 hard to clean?  Is the white dust that comes out a big problem to deal with?
Document: The biggest issue for me with this unit is the bright blue light that you can't control, turn off, dim. I bought it for my bedroom, and just can't use it there because the light is so disruptive. I also find it hard to clean, and feel like it gets mucked up fairly quickly. Otherwise I would say its an OK unit. If the light isn't a factor I wouldn't advise against the Heaven Fresh HF 707, but its not amazing in my view.
I just recently received my Heaven Fresh HF 707 and it's amazing! I have suffered threw cold dry winters with little relief from the dry air. This product has mad a world of difference and my home is no longer bone dry. It provides the level of moistness that you want with its changeable settings. What a great product!
I've had my Heaven Fresh HF 707 unit for about 3 months. We have used it almost every night and kept our bedroom door closed. We have noticed very little to no difference in our dry air climate here in Utah. The unit recently stopped blowing air. It still heats the water but will not blow at all. Very disappointed in this unit and will not buy another. I will look at more reasonably priced units next time.
We needed a humidifier for our lab and spent many hours researching different options. We chose the Heaven Fresh HF 707 for 3 reasons:* Ceramic nano-silver filter - humidifiers are magnets for mould and bacteria, so this is a must* Built-in Hygrostat - set desired humidity and it automatically maintains that level* Built-in negative ion generator, excellent for cleaning and sanitizing the airThe first unit shipped to us was missing a part, and we urgently needed a working dehumidifier.
The machine's integral thermometer gives fairly accurate readings. Both readings are thrown way off when you use the heating option. Like most ultrasonic humidifiers, it leaves a deposit of white dust on nearby surfaces, but somewhat less so than our previous Air-O-Swiss.Order fulfillment is direct from Heaven Fresh, so I ordered direct from them as well.
I purchased the unit directly from Heaven Fresh for my son's room. I just received the unit today and noticed that it was either a returned or refurbished product. When I took the unit out of the box, there were scuff marks all over the exterior, and water marks in the interior. Very disappointing! I had sent Heaven Fresh an email to correct this problem. Let's see what happens next.
I love this humidifier. The two reasons I gave it 4 stars instead of 5; the cap is awkward and hard to unscrew and there is a white haze on my electronics every day, I am constantly cleaning them. I can't imagine this being from anything else, as I never had a problem with this before. It is at least 10' away from my electronics and every day to every other day they are covered in a white haze. Otherwise, the unit is great.
This worked well for humidity. But after a couple of days could not see out my windows. Every thing was coverd in some kind of dust. Cold or hot even if i turned off the ionizer it did not matter. So i orderd a different one. Its been running for a week and no problem. Windows are clean and the humidity is stable around 35 /40  for my plants. I purchest the optimus 2.5 gallon humidifier and its just like the sears one i had for 8 years.
I set my unit to 45% every night in a large bedroom. I fill the reservoir about every 2-3 days depending on how much the furnace runs. If I don't hit the ion button I'll see the white dust on things in the AM, otherwise I don't.My only complaint is that the seal on the reservoir cap isn't that good. I put some vasoline on it to help it, but it's still hard to re-open and you need to tighen it well too.
I had such high hopes for the efficiency of this humidifier that we purchased last year but the white dust was unbelievable. I had to thoroughly clean every day and wash the windows each week. It is now waiting to go to the dump.
Answer: It's not that hard to clean the machine.  The white film is annoying.  It's not hard to clean off of things, but it builds quickly depending on how much it runs and how close it is to them.  Just don't put it next to electronics, the static electricity really attracts the white film.  It comes with anti-microbial beads in a container that is screwed to the inside of the cap for the reservoir.  I removed them and it did reduce the amount of white film produced; you'll just have to clean the tank more often.