Yep. I prefer taking 'em off with a polled bull, too - but in some breeding programs, you're still gonna have some horns appear from time to time - even from polled parents(both would have to be heterozygous polled).
I've burned 'em off calves, 'scooped' 'em out with Barnes' dehorners, cut 'em off mature cows with the obstetrical saw wire; we had a set of those bit old Keystone dehorners, but rarely used 'em.
Also used the caustic dehorning paste on bottle calves(Holsteins) - but I hated that stuff - tended to run places you didn't really want it, calves would rub & smear it - ended up with some that had holes in their ears where they'd 'moved' it around. Would hate to have a calf rub that stuff on the cow's udder. Bet it would do a bad number on an eye if they managed to rub/smear it in there.
I've also taken horns off 5-6 month old heifers with elastrator bands(the little green Cheerio); trim/shave the hair at the base of the horn, open the elastrator tool as far as it'll go and slide two bands as far down at the base of the horn as you can get 'em. Calves will shake their heads and paw at 'em for 30 minutes or so(they do that with the paste & burning, too), but after that, they don't seem to exhibit any discomfort. about 4-6 weeks later, they just drop off - no blood, no open cavities, no maggots. However, if I'm dehorning with elastrator bands, I'll give a Clostridial(blackleg/malignant edema) vaccine containing tetanus toxoid about 2 weeks before I apply the band and give a booster at the time I put the bands on.