Bests & Worsts Reviews from Amazon

I have been very pleased with the collar. It is easy to use and adjust to fit, no messy drops to spill or have your pet rub them off onto the carpet or furniture. Ginger has had no negative reaction other than a little hair loss around her neck which was listed as a side effect but may just be part of her seasonal shedding. No sign of fleas or ticks on her at all, and the ticks have been particularly bad this year. Hopefully it will be just as effective in the summer months when the flea population typically explodes in the neighborhood. Update 4/24/16: After wearing the collar for approximately 2 weeks, Ginger began to display signs of lethargy, hair thinning first at the neck then all over, loss of appetite, stumbling, thick discharge from eyes, then vomiting and diarrhea. Immediately removed the collar and bathed her in Dawn detergent, washed all of her bedding and her regular collars. Took her to the vet who treated her for mild shock and dehydration, ran blood work (came back normal) and administered fluids and anti-nausea/anti-diarrhea meds. Tonight she is mostly back to her old self. Vet says she had a toxic reaction to the flumethrin in the collar. Will be returning it tomorrow!