Ace Flea & Tick Killer for Pet and Home
Use sparingly and avoid if pregnant or around young children A water-based spray-on product for fleas and ticks.
Sumithrin is another name for Phenothrin, which is one of a class of synthetic chemicals, called pyrethroids, that are derived from natural chemicals found in chrysanthemums. The synthetic varieties are significantly more potent and persistent than naturally occurring products and some can cause allergic responses. Phenothrin is also suspected to disrupt the endocrine system. Pyrethroids are known to be very toxic to cats, causing muscle tremors, seizures, salivation, vomiting and even death. Veterinarians caution against using pyrethroid containing products if there are cats in the home.
- Very toxic to cats
- Suspected hormone disruptor
D-trans-allethrin is one of a class of synthetic chemicals, called pyrethroids, that are derived from natural chemicals found in chrysanthemums. The synthetic varieties are significantly more potent and persistent than naturally occurring products and some can cause allergic responses. d-trans-allethrin is also suspected to disrupt the endocrine system. Pyrethroids are known to be very toxic to cats, causing muscle tremors, seizures, salivation, vomiting and even death. Veterinarians caution against using pyrethroid containing products if there are cats in the home.
- Very toxic to cats
- Suspected endocrine disruptor
- Wash bedding in hot, soapy water once a week.
- Vacuum the home once a week. Empty the vacuum bag and dispose its contents.
- Comb daily with a fine-toothed flea comb and rinse the comb teeth in hot, soapy water between strokes.
- Look for repellent sprays made with essential oils of lemongrass, cedarwood, peppermint, rosemary or thyme.
- For severe problems that require chemical intervention, look for lower risk products such as those using Pyriproxyfen, Nitenpyram, Spinosad, S-Methoprene, or Lufenuron as the active ingredient.
- For more tips on safer flea and tick management, see How to Control Fleas and Ticks Without Chemicals.
Chemical Index
- 1,4-Dioxane
- Arsenic
- Asbestos
- Atrazine
- Bisphenol A (BPA)
- Carbaryl
- Chlorpyrifos
- Diesel
- Dioxins
- Endosulfan
- Fluoride
- Formaldehyde
- Hexavalent Chromium
- Lead
- Lindane
- Mercury
- Methylene chloride (dichloromethane)
- n-hexane
- Nanomaterials
- Ozone
- Parabens
- Perchlorate
- Perchloroethylene (Tetrachloroethylene, PERC, PCE)
- Phthalates
- Propoxur (Flea and Tick Pesticide)
- Pyrethrins
- Pyrethroids
- Styrene
- Sulfur Dioxide
- TDCP/TCEP (Chlorinated Flame Retardants)
- Tetrachlorvinphos (Flea and Tick Pesticide)
- Trichloroethylene (TCE)
- Triclosan and Triclocarban (Antibacterials)



