easily installed on Dutchman, eliminated smell in head and improved everyone's attitude. Should be standard equipment on all RVs.

I bought 2 of these - one for black tank vent and one for gray tank vent. No more odors from black tank and also solved a problem I had with slowness when dumping gray tank.

Since installing the Cyclone I have not smelled any odor from the toilet. No doubt the best money I have spent. Installation is simple although I did have to cut back the railing on the top of my rv to let the cyclone spin around.

For those who can't determine gray water vent from the black water...Put this on the one that spells like your rig at highway speeds before your put this on. If you still have the smell, then you confused the smells of gray water vs black water and can swap them. And if you still can't figure it out, swap the vents at the gray and black tanks with a cross over and you won't have to relocate this part and have entirely too much time on your hands.

Not sure yet how it will work, but the reviews indicate it does. Awful stink last year while in Montana in July, that's why I bought it. I had to wait until I got home to install it - not exactly a field fix job. I had to remove all the Dicor sealant around the old vent cap, then I had to split the PVC connector that was glued over the main stack, before I could attach the Cyclone. It's not necessarily as easy as the instructions claim, but if you are reasonably handy, it's a fairly simple task. You can mount it fairly low to the top of your rig by sliding it further down the stack - as long as it can swivel and there is room to drill the pilot holes for mounting (with the flange pushed up out of the way). Some silicone to finish up and then some Dicor around the base the next day. Even with all the extras I had to do, the whole job took no more than 45 minutes.

the old roof tank vent caused a nasty sewer stench to enter the RV at highway speed. This wonderful device keeps the horrible odor away. It is very easy to install involving only a few minutes on the roof, a screwdriver and some sealant.

We purchase the Cyclone for our Winnebago View. Probably took less than five minutes to install. It worked perfectly till it was knocked off by low branches. I'd like to put another back on, but it would just get knocked off again.

(Newbie Alert: Read the directions & get all your extra supplies before you tear your OEM vents apart.) I recently bought this (buy 1, get 1 free at CW) after a 5 day camping event left our bathroom reeking like a blackwater tank. I flushed the tanks really well and installed the first one on the greywater vent (better to screw that up I figuired). It was the first time I had done any improvements my new 35' Class A. I didn't have the silicone caulk or gun, so the next weekend I ran back to CW & got it. I started as the sun was setting; It took me 15 minutes on the first & about seven on the other. I was back in the house in 25 minutes! I'd suggest bringing a bottle of water and silicone (septic handling) gloves so you can wet the gloves so you can smooth out the silicone from the caulk gun. We have gone camping three weekends since then and had two family cookouts (we use the RV as a base station). I didn't get a chance to dump the tank last weekend (about 1/2 black & 2/3 grey in each 41 gallon tank) and we've now had a 4 days of 85-95 degree highs. Between the Cyclone Vents & the Orange drop-ins, nobody has smelled a thing! Overall, it is a cheap and effective product and easy to install.

We purchased this product because we keep getting sewer smells in the RV while driving down the road. Since we installed this product we have not had any odors from our septic system. It was easy to install. This is a great product!!! Would recommend to everyone.

Perfect fit. I removed the original cover and base and installed the new base and swivel vent. Use some silicone to seal it and finished in about 20 minutes. Our first road test proved it absolutely effective while under way and while parked it turns nicely into the breeze and vents well. Happy camper!