It sure would be if eaten in a large quantity, but could be considered as non toxic as any bullet lube, as it is close to half natural unrefined bees wax. The rest is made up of several petrolium products, which I consider toxic so far as edibility. As toxic as the plastic most american food is wrapped in, as a matter of fact!
There is very little smoke when shooting, and that quite pleasant to smell. If I thought it had the slightest toxity when handled I'd have quite making it soon as I developed the formula 30 years ago. But I've spent an unthinkable number of full days over those years with lube smeared all over my hands, with no ill effects. The skin of my hands is probably above average health for my age, which is 68 years. If the lube was toxic it wouldn't be, you can rest on that!
I melt it down in 100 pound batches and the vapors off it make me not feel well when around it for too long, if I don't wear a welders face mask. One suited to catching welding smoke. But plain bees wax will do the same, with the misery being temporary sinus inflamation. No customer is going to face such a huge melted pot of it!
As for toxity when shooting, to my knowledge, the most toxic lube used by american shooters is Alox, which produces massive vapors when the powder blast hits it. Most importantly though, for those shooting inside buildings is the problem of lead vapors, which are created whenever a barrel is leading at all. Because LBT bullet lube controls leading better than any lube I know of, it also controls lead vapors best, in my opinion, and that should be the lead shooters greatest concern, I think, even when shooting outside.
Powder gasses are more toxic than any lube smoke, and in far greater volume.
This is a long and very honest dialog intended to indicate that I consider LBT lube not harmful to humans when used for bullet lube.
