Tips for Choosing and Using Silicone Dishes
Be sure to choose dishes made from 100% food grade silicone. Fillers can compromise the quality and durability of silicone.
Confirm that all colorants used are not BPA-based and that lead testing has been done, especially for brightly colored products.
Don't be fooled by thermoplasticized rubber (TPR) dishes. They look and feel much the same, but TPR isn't as durable and doesn’t tolerate high heat like silicone does. Products like these measuring cups made from TPR often have a rigid plastic skeleton and may warp when exposed to heat.
Be aware that phosphate-free dishwashing detergents may cause silicone dishes to end up with water spots or hold onto certain smells/tastes. It's no big deal, just add some white vinegar or a non-toxic rinse aid like Ecover to your wash cycle.
There are times when durability and convenience win out, leaving my glass and stainless steel dishes in the cupboard. So given the choice between plastics made with carcinogenic and endocrine disrupting chemicals, I'd opt for silicone anytime.