Yes, I would think it was!
The xanthene dye is considered to be toxic. This dye has been studied and it has been found that the risk is very minor.
Yes, silica is not considered toxic to cats.
Yes, daffodils are toxic to cats if ingested.
Pussy willows are not toxic to cats. However, there are a long list of other plants and trees that are toxic to cats.
Yes, the spring cactus is toxic to cats.
Yes, Christmas cacti are not toxic to cats.
Yes, Thanksgiving cacti are not toxic to cats.
Yes, Tradescantia plants are toxic to cats if ingested.
Yes, inch plants are toxic to cats if ingested.
Yes, Thanksgiving cactus is non-toxic to cats.
Yes, Christmas cacti are non-toxic to cats.
Yes, aloe plants are toxic to cats if ingested.