Reddit mentions of NOW Foods Chlorophyll 100 mg Caps, 90 ct

I didn't realize my girl's first heat was coming until someone saw a spot of blood on the wood floor just as she walked by. We realized she had been cleaning herself, so it wasn't obvious that way, and she swelled a bit, but not half as much as the vet had indicated, so I just didn't realize. So just be aware that it might not be THAT obvious, even once it has started.

Keep her away from other dogs during walks. If you have her wear panties it can be a sign to other dog walkers to keep a wide berth.

You can feed her chlorophyll pills which I'm told by experienced Samoyed folks, masks the odor. Her poop will turn green, but that's not a problem. I forget the dosage amount--I'll try to look that up. https://www.amazon.com/gp/product/B000ZL5D7Y/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1 You can also spray her back end with classic Right Guard, in the spray can. That also masks the smell.

A lot of breeder contracts tell you not to spay them before 2 years of age. Different breeds grow at different rates and Sams need somewhere around 18 mos. to 2 years to mature fully and for their growth plates to close. If you spay before the growth plates close (the sex hormones regulate growth), their bone growth can finish up uneven. This can lead to more likelihood of hip dysplasia and joint/ligament issues. There are also risks of her getting a "spay coat." Spayed dogs tend to have a decrease in metabolism and an increase in appetite, and will often put on weight. Do a little research if you can, on the pros and cons, before making a decision.

Addition: I gave my girl one chlorophyll capsule in the morning and one in the evening, with some spray cheese.