10 Fundamentals About Sonicare Replacement Heads You Didn't Learn In School

i bought a package of three brush heads for the first time from amazon. the second brush head only lasted a month then made a weird sound and slowed way down so i knew i had to toss it...the first one was okay but still didn't seem to have as much juice as others i have sonic toothbrush heads bought in the past from other vendors. i have bought them for decades but usually the compact brush head model and they have always worked great also i was a bit concerned because the writing on the long neck of the handle looked different than in the past but that may have just been a design change by sonicare. i hope the third brush works longer than a month update...the third brush only lasted a couple weeks. time to contact them about this i guess.