Most lawns would benefit from scarifying every single year. There are always exceptions such as a Dwarf Rye grass that don't produce a lot of thatch, but in general, you won't do any harm by giving your lawn a run over once or twice a year with a scarifier.
Once your lawn is performing well, you may also want to add in a verticut a couple of times or so a year. Sometimes referred to as a groomer, this is a very light tickle through the thatch layer. It's useful for taking out very very fine small amounts of thatch so that your lawn can be kept in a peak condition.
So the answer is YES... you should scarify your lawn each and every single year !
#scarifyeveryyear
#thatchinlawn
#scarifying
