caysea7254,
In this day and age, there's little chance of buying or finding any carpet that is NOT non-allergenic! As for "grandbabies", dirt/sand/germs/etc lays right on top of a hard floor just waiting for the grandbaby's hand to transport it to the their mouth as that's where a baby's hand always goes first. However with carpet, the dirt/sand drops down between the fibers of the carpet and then it's easily and efficiently sucked up and out by a simple vaccuum cleaner. Shampooing or detergent washing does the same thing to both carpet and hard floors, it cleans them! Sweeping hard floors doesn't remove the germs at all but it sure does spread them around!
BTW, we not only had our own babies but had 8 "grandbabies" and now had/have 6 "great grandbabies" as some are older now and in only a couple years will have "great great grandbabies" roaming our carpets in our homes and RV's. A very nice soft padded landing for their falls and headbumps...
For grandma and grandpa too!
A superb CC LB 4X4, GM HD Diesel, airbags, Rancho's, lots more
Lance Legend TC 11' 4", loaded including 3400 PP generator and my deluxe 2' X 7' rear porch
29 ft Carriage Carri-lite 5'er - a specially built gem
A like new '07 Sunline Solaris 26' TT