Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Are these food storage containers ok to wash in the bottom shelf of dishwasher?
Document: I was looking for something to replace all my plastic food storage containers (trying to cut down on toxins and heal my thyroid), so I ordered these. They are very sturdy and stackable (some even fit inside other containers to take up less room). And I like that they are dishwasher and microwave safe. This set includes a great variety of sizes.
This is the third set of Kinetic Go Green Storage containers I own. I love the way they work. My food stays fresh in them for weeks, not days. Even fresh berries and vegetables last for up to two weeks. I prefer the glass to the plastic Kinetic containers, even though the plastic has no dangerous chemicals. They just turn from clear to yellow-green when you first put them in the dishwasher.
However, I use the plastic containers for dry goods in the cupboard. The glass containers are safe in the microwave, even when taken directly from the refrigerator. They are not tempered for oven use. They are dishwasher safe, but I hand wash the lids, so the seals don't shrink. When empty, it's best to store the containers with the lids sealed on them. Otherwise, they can be difficult to re-seal. They stack more compactly with the lids on, anyway.
No plastic chemicals to worry about, no color staining to worry about and the lids fit perfectly. They wash up in the dishwasher beautifully. Really love this product and will look to buy more to expand the collection as needed. Perfectly fit my needs as I look to eliminate plastic products in my household.
I bought these for one single purpose: to keep really-really stinky cheeses such as Limburger from stinking up the entire refrigerator. Only time will tell if my goal will be achieved but based on a couple of days of experience, it seems to work. These containers are very well built and they look of much higher quality than any other food storage container I ever owned. Of course, surprise-surprise, they are also much more expensive.UPDATE on August 13, 2011.
The Kinetic Go Green Glass Lock 16 Piece Set is a well built and reliable set of containers. The lids have snap locks that are easily locked into place and removed. The set is good for watertight storage of dry food products or leftovers, and you never have to worry about staining. This set comes in one size but there are other sets of various sizes. The containers are sturdy and work well with heat and cold, but they're not designed to be used for cooking.
No more wondering what chemicals are in my food...glass storage goes from fridge to microwave, and clean up is much better than plastic...no stains!
Bought the 16 pc. set for storage and for my husband to bring lunch to work. Quality is great, lids good & weight isn't too heavy. But the sizes are a bit awkward. The large ones are obviously too big to bring for work, but the medium ones are too small, and the small is way too small. This set is definitely more useful for food storage; I find them too awkward & limiting for bringing lunch.
Very durable. Lids snap on tight. Easy to clean. And best of all, you can microwave the glass container without concern of chemicals leaching into the food (as with plastic containers).
I'm so happy with this product. They are sturdy and clean up easily. I feel like the design and materials help keep my food fresher longer then traditional plastic containers.
Answer: Not the lids,  top shelf only. Containers can go on the bottom