Yes, I agree this is not the most durable tent in the world, but I don't understand the bad reviews.  My 10 lb. cat has sat on the top of it and it has held up fine.  This is a wonderful tent.  It keeps the litter inside of the tent and off my floors.  It causes the cat to go up and down the ramp instead of jumping off the side of the litter box throwing litter everywhere.  I change the liner and lift the front of the cat box up with one hand and vacuum up all the left over litter once a week.  It also is amazing for containing the odor.  According to the reviews there must be a lot of lazy people that don't like to bend over to look into the tent to see what's going on.  I think it's pretty easy to get on my knees and check it out once in a while to make sure everything is running smoothly and to add more litter.  Honestly, this cat box is made for one of the electric cat boxes, if you don't have one of those you're going to have odor regardless and yes it would be a pain to have to scoop a cat box every other day but it's not the tents fault.  This product was made for the electric cat box.  I think a person would have to be crazy to spend $30.00 on a cat tent and not spend the $90.00 on the electric cat box.  This is a tent.  It's not meant to have a cat sitting on top of it.  What do you think would happen if you threw a camping tent up in your front yard and you went and sit on the top of it.  Would you leave a bad review for the tent because the "tent" was flimsy and didn't hold up?  It's a tent people... What do you think you're buying? I've had mine for 2 years no zipper problems and still holding up fine.