We had some difficulty getting one of the tops on while moving the middle piece. We lost some of the aresol due to attempting to put the top on. Great cat deterrence once the cat has been sprayed several times. More times than not, we have set off the spray either being at a distance moving or while close by standing. The cats will be in front of it and it won't go off right away or at all! Will continue to use this product and decide later if we will get refills.
ProsDeters cats well once they are sprayed enough
ConsTop can be difficult to put on, humans tend to set off more than cats