Basic information:
ScoopFree Ultra is an automatic cat litter box that helps cat users to soak up urine and control feces smell with disposable litter trays installed in it.

Manufacturer recommendations-

ScoopFree Ultra’s rake cleans and pushes waste into covered compartment 5, 10 or 20 minutes automatically once your cat uses the tray.  If the cat uses the litter box once again, the sensors rearrange the litter box for an added 5,10 or 20 minutes, depending on encoding.

Features:
Automatic scooping with ScoopFree Control Panel and ScoopFree Ultra Control Panel,
Blue crystals are free of dust and have low tracking,
Crystals absorb cat’s urine and feces reduce odors,
System uses power Supply UL-rated 120V 60 Hz AC Adapter
Cord length: 10 foot
Litter Box dimensions: 19″ W x 27-3/8″ L x 7″ H (16-3/4″ H with hood installed)
Disposable Tray Dimensions: 14-1/2 W x 22″ L x 2-1/2″ H
One year replacement warranty (free shipping cost),
90-day-money-back guarantee (free shipping cost) and
Litter Area Dimensions: 14” x 14” square

The Unit has –
Owner’s Manual,
1 Power Supply Adapter,
1 Premium Blue Crystal Litter Cartridge,
1 Privacy Hood and
1 ScoopFree Ultra Automatic Self-Cleaning Litter Box

Pros and Cons of the ScoopFree Ultra:

Pros:
Easy setup and smooth scooping without jamming,
Crystals absorb liquids and offer good odor control. It completes its action without creating any dust,
Adjustable time delay of 5, 10 or 20 minutes for a cleaning cycle,
Facility to track as how many times your cat makes use of the litter box,
Privacy Hood available for cats that love enclosed litter boxes,
Much less maintenance than any other brand available in the market No need to scrap bottom of the pan,
Convenient disposable system and Long 10 foot electrical cord,
Short cleaning cycle (Just for one minute) and It is but much quieter than other rake-type automatic litter boxes in spite of making some noise,

Cons:
You have to buy cartridges time and again to maintain the system. It becomes very costly for you if you have more than one cat,
Some waste might get caught at the back the rake or on the rake from time to time,
The motion sensors get blocked if a cat is a digger and create big piles of clump,
The cardboard bottom can get scratched if a cat scratches forcefully after doing its business,
The waste trap is not sealed and you have to blend the crystals quite frequently so that the cats may not make use of the same spot time and again,
Cartridge gets weighty when it becomes dirty and the litter area is not exceptionally large (14” x 14”),
Not suitable for cats that make use of the corners only of the litter box,
Some cats might not take up to the crystals and Cartridge life span could be shorter than advertised, which depends a number of factors,
A number of cats makes water on the wall the litter box which creates leaking between the box and the tray and
Magnets are not attached powerfully to the violet plastic waste trap cover.

Conclusion:
ScoopFree Ultra is an amazing rake-type of automatic cat boxes.  You can enjoy this reliable machine that offers you freedom from scooping the cat litter box if you check it on daily basis, clear the clumps off every few days from the waste compartment and redistribute the crystals.