After reading all the reviews I was skeptical about this litter box but I have four rescue cats ranging from 7 to 19 lbs. The 19 pound cat is a half Main Coon. I had three extra large litter boxes and 1 regular litter box. Keeping them clean and not smelling was a daily chore! No matter what litter I used! I can't afford an electric self cleaning litter box and did not want the hassle of maintaining one by having to keep the sensor clean and taking the thing apart to clean at times. So I thought about this litter box. I decided that I could fix any issues the reviews addressed and I did! I should patten this! ? I am so happy with these that I had to share! I have two, even with four cats! I roll it daily and have no issues! Here are the instructions complete with pictures to make this the perfect litter box!1. Addressing the issue of loose catch pan with a gap. Buy a couple of buckle latches for each box. I got four (enough for two boxes) for around 5 or 6 bucks on Amazon. Take a very small drill bit and predrill holes. Make sure the drill bit is smaller than the screw you will be using to affix the latch. Be sure the part of the latch you pull up is clear of the catch pan handle. I bought 3 inch latch buckles. This will pull the catch pan close to the opening. Be sure to align the catch pan properly when drilling holes so it will sit right When you use the sceew to attach the latch it may hang out some but it is not where a cat can scratch themselves. Be careful when atraching latch. I drilled my first hole to close to catch pan edge. Again, don't use a large drill bit or the screw will not stay. SEE PICTURE2. Catch pan spilling litter. Take some weather stripping and put inside the top of door of the catch pan. When you do this and add a latch...problem solved. SEE PICTURE3. Leaking litter and cat urinating against wall causing leaking issues. Get a roll of weather stripping. I got a roll for about 6.00 bucks from Amazon. I got 1/2 wide by 1/16 thickness. I will double check measurements. You don't need one to thick or the latch will not close. When lining the bottom of the box bypass where the latch connects to the top. This will stop any litter spillage and urine spillage at the seam. The weather stripping is not seen and does not get wet of a cat urinates on the wall because the top of the pan overlaps. After putting the weather stripping on it will take a little more effort to latch the lid. Do so carefully as not to break the lid. I had to problem. No when I take the lid off every 2 weeks to clean the pan the latch work great because the weather stripping as mashed into perfect shape.4. Now for the BIGGEST complaint. The sifter grid will not stay in place. First take a very small drill bit and drill a hole in the snap area at the bottom for the grid. SEE PICTURE before doing so. Then take a plastic tie wrap and insert and pull around to the back of the sifter grid and secure. To do this you have to drill the hole first then snap the grid in and then secure behind the grid on the horizontal part of the grid. Then finishing installing the piece as instructed by putting the back down into the pan. This will keep the grid sifter in place. Be sure to snap the grid sifter in place first or it may not work.I could not be happier with my 2 litter boxes! I hope this helps anyone who loves cats but can't afford an electric litter box or who doesn't trust them or doesn't want the maintenance of one.I have also found that if you roll the litter box to only 80% you will not loose to much litter in the catch pan. I sometimes roll it to far and get a catch pan full of good litter. My solution...I have a large plastic bowl with a large scoop in it. I slowly dump the catch pan in that then discard the waste in the litter genie and then dump the litter back in the box. Seems time consuming? Nope...takes about 60 seconds to clean each box! I use hardball litter mixed with paws and claws clumping litter because some have said hardball is dusty to cats sinuses. I have not had any issues and even with a 19 lb half Main Coon I have had to messy messes to clean. That would be a personal preference to anyone on the litter they use.I hope this helps anyone who wants a semi self cleaning litter box!