Havahart 5277 Critter Ridder Motion-Activated Animal Repellent & Sprinkler, 4 Pack

Excellent, keeps deer and critters out of my garden. Needs to be checked periodically for hoses leaks and strong winds will set it off. Works so well I purchased another.

Finally, a solution that really works to stop the deer from eating my annuals! I have made numerous attempts to keep the deer from eating my landscape plants and flowers. This year, I only planted “deer resistant” annuals, yet the deer still ate them. The smelly sprays are expensive consumables that wash off with my automatic sprinkler that waters every other day. The deer became accustomed to the contraptions with ultrasonic sirens and red flashing lights. I have even covered many of my flowering plants with chicken wire, but the deer just rip that out. The Critter Ridder motion-sensing sprinkler is the answer. The sprinkler detects motion and shoots a 5 second burst of water in an adjustable arc. The Critter Ridder motion-detecting sprinklers can be daisy-chained together with multiple hoses so you can protect your entire perimeter. I have mine set up on a hose timer to only go off between 1:00 and 5:00 in the morning so my precious Amazon delivery person doesn’t get drenched. I set up my Birdfy camera to capture the panic the Critter Ridder causes to the deer that used to visit my property every night. Once the sprinkler shoots for 5 seconds, it resets and will shoot again and again. Setting it up was very quick and easy and it is in no way harmful to the deer. Please watch my attached video of one of my Critter Ridder motion-detecting sprinklers in action.

Pros: - work OK while they work - uses AA instead of 9-volt Cons: - they don't have a "night only" settings like some slightly more expensive ones. - they crap out. I've had TWO crap out this week (out of about 10 I have purchased) and when they crapped out they stayed ON. Even if I set the switch to OFF. I only have water running to dusk to dawn+, so they only wasted 10 hours worth of water a night. Glad I was not on vacation. TWO this week, and I've got at least ANOTHER two that I couldn't use this year because, when I brought them out of the basement in the spring, put in batteries and tested them, they were dead. That's about $200 wasted -- and deer getting into the garden costs a lot ,ore than that. - they are not as loud as their chief competitor - they are not quite as tall as their chief competitor so better for use on grass than in any kind of naturalized garden

I have used this type of device to keep deer and squirrels out of my garden for 20 years. On the whole manufacturer’s have raced each other to the bottom of being cheap over being durability. That said, this unit has better sensitivity than other units I have used in the past. It also uses much less water during activation. However it has a quieter activation which for a critter deterrent is not as good a thing. Louder the better. But it has worked ok. Yes, it all plastic. Yes, you have to be careful to not over-tighten connections but get it tight enough to not leak. It also uses AA batteries which is new to me but so far has not run down in the month I’ve had it running. Lastly, the sprinkler mode might work for some but not for me. It shoots little darts of water. Not much at all, like I mentioned above. It could run all day and not water my garden. But I didn’t buy it for that. And the little drops go about 40 feet. Deer hate it. Overall, so far so good. Update: Worked well all summer and fall as a deer deterrent only using 1 set of AA batts I which is much cheaper than a nine volt. Now we’ll see if it still works next year after being stored this winter. So far so good. I am happy with it. New update 2022: worked fine this new gardening year. A new set of batteries and still sensitive as ever. Only problem is the plastic stop on the on switch has broken internally but it still works ok. I just marked where the minuscule dot on the switch is with a marker and that worked to know where it’s at at a glance. The knob can now go all the way around now but it works anyway since it a double sided switch knob. Sorry, electronic lingo there but it’s not broken. So far so good! Happy with it! 2023. Loaded batteries and it working just fine again starting year three. Ya!

The first one I received had a faulty sensor that wouldn't go off even if I covered the sensor with my hand repeatedly. This gave me an hour of headache as I was trying to determine if it was user error, battery, or environmental conditions but it turned out to just be a bad unit so that speaks on the quality control. The replacement had the opposite effect. I was getting faulty triggers even on the lower sensitivity setting. I'm using this device to keep neighborhood cats and my own dogs out of a golf practice zone in the backyard and to stop them from doing their business on my expensive launch pad and tent. What happens if this device faces towards the sun, is if it goes off, it wets the ground that might pool some water, then the warmth of sun appears to reflect off the ground or tent and it causes another false trigger. After a few days of these false triggers going off all the time wasting my water, the batteries died and needed to be replaced. I had to re-angle the device to face away from the suns path and this eliminated the false triggers however it wasn't ideal for the layout of my backyard and I was restricting my own territory. So it took some tinkering until I found a way to angle the device towards the ground a small amount and it reduces the false triggers. At night it works the best as there's less overall interference to cause false triggers. The sound alone can scare some animals and the water splattering all over the place is a bonus scare action. With decent water pressure the sprinkler easily shoots over 10 feet and can zone out a good area. My dogs had claim to my whole backyard and no matter what I tried other than fencing off an entire area, the dogs would do their business in the only areas I don't want them to. This was the most cost effective way to zone them out of a certain area. The good news is in several weeks, my area doesn't smell and there's no orange stains and soft tootsie rolls to clean up. It doesn't feel high quality but it doesn't leak, and at least the sensor works on my second unit. The only problem I have with it, is I have zero confidence in leaving this completely unattended as under the right circumstance, if it goes off, it could put itself into an indefinite loop of continually re-activating itself until the battery dies and it's flooded a small area 5 cups of water at a time. Another bonus is my younger kids like to pay chicken with it to see how close can they get before it sprays them. My dogs now respect it and they look at it with cautious eyes when they go out there. I also have never seen them urinate in my area as they get pelted with the sprinkler water, it usually makes them go in another area which is the point.

Love this! My free range chickens were constant coming up on my patio and pooping all over it. This has stored then completely.

I bought this because of the price, as well as some of you were saying it had higher sensitivity than the orbit. If that’s true, then the orbit has extremely low sensitivity seeing as how this product is more miss than hit. I really never heard of going off at night so I would bet it doesn’t work at night since it really doesn’t work well during the day. I could run in front of it. I could wave my hand in front of it a dog could run in front of it and sometimes it would work. When it would work, it works great. Sometimes it will keep birds away if it senses them. Forget it picking up groundhogs no way. That’s why I bought this as well as birds. When it started malfunctioning and not shutting off, I didn’t think it would be a regular thing, but it turns out it is. I’ve only had this for one week. I gave it two Stars because the range is pretty good and it has a sprinkler setting that I really like. However, I will be returning this because it just doesn’t work properly. I even bought a brand new batteries and change them out and still no luck. Another thing about this product is when it is on the sprinkler setting, even if it is deep into the ground, it usually becomes unstable and falls and I noticed that it leaks pretty bad. It is a lower quality product and you can tell by the materials. My search continues.

This helped keep the squirrels out of my garden all summer. It also sprayed me a few times. It's very effective.The coverage range is a lot bigger than I expected. It is kind of loud but I think that helps to keep the critters out. It held up all summer.