Rikagaku White Dustless Chalk, 6-Pieces (DCC-6-W)

The product is good for ant destruction.

I did not know chalk could be this good! I knew that I didn't like Crayola brand and I've gone through several liquid chalks and not found anything great. Then one day my husband told me about how he ribbed his friend who is a math professor about the "best chalk" factory closing and how hard it is to get good chalk. His friend said he didn't use that chalk, he used the "second best" chalk. So I texted his friend to get the name of it and here we are.I ordered both the best and second best chalk but honestly did not find them different from each other. HOWEVER from the first stroke of my T for Tina I knew that I would not be wasting any more money on second rate chalks. My chalking life is forever changed!The chalk goes on so smooth and silky. The colors are rich. The way it glides across the board even feels good. It's not scratchy and it goes on evenly. I was confused why it looked like it was wrapped like a cigarette with a filter so I asked the professor. He said that it was wrapped like that to keep the dust off your fingers. It's not completely dustless but it's definitely and improvement over Crayola.Just try it, you won't regret it!

I tried several brands of chalk and like others have said it all depends on the chalkboard surface and the brands of chalk you have to find the right match. With that said Hagoromo is still the best chalk out there in my opinion and works well on all surfaces and now this brand Rikagaku (DCC-6-6C) is just as good. The pieces are thicker and do not fit in the standard chalk holders (have not not shopped for that item yet) this chalk is hard but writes very creamy and depending on the pressure used it runs down quickly you really only need to gently glide across the surface to bring out the colors.

Ruined my chalkboard — colors are trash, muted and hard to see, and they don't erase properly. Instead of a fine dust-like material it turns into a muddy smear that would not come off.

Each piece was broken. Packaging was a bit dusty and once opened it was a mess. Writes smooth but dusty.

I'm no mathematician, so I don't care that much about chalk. However, I do have a terrible chalkboard, and the crayola chalk I was using was scratchy and wouldn't stick to some spots. It was effectively unusable. I bought this chalk and the difference is night and day. It writes smooth and wipes off easy, and there aren't any spots where it doesn't stick. Now the crayola chalk feels like a burnt stick covered in glue and dirt. I haven't tried other brands, and now I probably never will. This stuff is great!

I bought this chalk to deter ants in the kitchen area. I don’t use chemicals in my kitchen... I make chalk marks (to block the ant’s path) on windows sills and any hard surface where see a few ants walking ... Within a couple of hours the few ants are gone, generally ants will not cross the chalk. I watch the area and if one or two manage to cross (walk in the chalk) I believe the chalk causes confusion and the ants leave and within a day or two, no more stragglers. I’m not sure if the chalk works when there’s a lot of ants already present but definitely works for the few that may be scouting. And I think when the one or two goes back to the nest others are deterred from coming in that direction. I hope this review helps.

Used this before, it keeps those bugs away