Camco Premium Portable Travel Toilet - 2.6 Gallon Capacity with 3-Way Flush & Swivel Dumping Elbow | Lightweight & Compact for Camping, RV Trips & Emergency Use (Model 41535)

I decided on this Camco 41544 toilet because of 1) the shape of the waste tank and 2) the seat height and 3) the piston pump (instead of bellows or battery operated).1) Many reviews of the "square waste tank with inset handles" type toilets complained that solid debris had a tendency to get stuck in the inside corners of the tank. In my one-week testing of this toilet I found that crap can stick to just about any surface if you don't use enough water. Lesson learned: don't be stingy with water. Especially just before emptying the tank, I fill the bowl several times with clean water then flush (WITH THE LID DOWN).0) Lesson 0 (before lesson 1). Only flush with the lid down. If there's enough water in the bowl to cover the sluice gate (aka flush valve), there's a chance that it will "burp" when you open the gate. After the first incident I didn't experiment with different sluice opening speed (which may have an effect on the splash). I simply reduced the odds of splash back to zero by closing the lid first. This rule should apply to any toilet of the sluice gate / sliding hatch variety.2) The height of the seat on the 5.3 gallon model is about an inch shorter than our "normal" (Home Depot Glacier Bay) toilet at home. Although I don't see a need to build a platform for underneath, I might buy/make a tray that will allow me to strap down the toilet when in transit.3) The piston flush system. Water is sprayed into the bowl by lifting and pushing down (slowly) on a handle at the rear corner (left side as you face the front of the toilet). The handle has a small rubber piston attached to the bottom and pumps water both on the up and down strokes. This allows you to very easily add as little or as much water to the bowl as you want. And with very little effort. I have mild arthritis in both hands and using the pump doesn't cause any pain whatsoever.When I first put the toilet into "test" service I noticed that water was slowly leaking around the "screw cap" that keeps the piston assembly in place. Not gushes, but a few drops with each pump cycle. Enough that it started dripping down the back of the toilet with each use. Instead of being silly and sending the toilet back as defective I unscrewed the cap and removed the piston assembly. Upon close examination I found that the large O-Ring seal inside the screw cap had a small crease in it. Probably not seated all of the way into its groove when first installed. So I sent an email to Camco about the problem. I never got a reply reply from Camco. Perhaps the happy face customer service person was on vacation. Within several days a package arrived with a replacement piston assembly, so they are paying attention.Bottom line is, the problem was resolved quickly.This part is irrelevant to what brand of toilet yo buy. This one came with two sample Camco branded drop-in TST odor control sachets. They look a lot like dishwasher detergent pods. I'd already decided to give Simple Green a try (1/2 cup in the clean water tank before filling) so I haven't bothered to use them yet. After a week of daily use there was no odor so I thought I'd found a cheap and eco-friendly method of controlling portable toilet ordors. And then I emptied the black water tank. The task of pouring it down our bathroom toilet made the bathroom smell like a ripe pit latrine (outhouse). Which is what it's supposed to smell like without fancy treatment chemicals, right? Next time I'll use the TST drop-ins and post an appropriate review with that product if I buy a pack of them.